File: chrome_browser_main.cc

package info (click to toggle)
chromium 138.0.7204.157-1
  • links: PTS, VCS
  • area: main
  • in suites: trixie
  • size: 6,071,864 kB
  • sloc: cpp: 34,936,859; ansic: 7,176,967; javascript: 4,110,704; python: 1,419,953; asm: 946,768; xml: 739,967; pascal: 187,324; sh: 89,623; perl: 88,663; objc: 79,944; sql: 50,304; cs: 41,786; fortran: 24,137; makefile: 21,806; php: 13,980; tcl: 13,166; yacc: 8,925; ruby: 7,485; awk: 3,720; lisp: 3,096; lex: 1,327; ada: 727; jsp: 228; sed: 36
file content (1968 lines) | stat: -rw-r--r-- 79,001 bytes parent folder | download | duplicates (3)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "chrome/browser/chrome_browser_main.h"

#include <memory>
#include <string>
#include <tuple>
#include <utility>

#include "base/at_exit.h"
#include "base/base_switches.h"
#include "base/check.h"
#include "base/command_line.h"
#include "base/files/file_path.h"
#include "base/files/file_util.h"
#include "base/memory/raw_ptr.h"
#include "base/metrics/histogram_functions.h"
#include "base/metrics/histogram_macros.h"
#include "base/path_service.h"
#include "base/task/current_thread.h"
#include "base/task/single_thread_task_runner.h"
#include "base/task/thread_pool.h"
#include "base/threading/hang_watcher.h"
#include "base/time/time.h"
#include "base/trace_event/named_trigger.h"
#include "base/trace_event/trace_event.h"
#include "base/values.h"
#include "build/build_config.h"
#include "chrome/browser/active_use_util.h"
#include "chrome/browser/after_startup_task_utils.h"
#include "chrome/browser/browser_features.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/browser_process_impl.h"
#include "chrome/browser/chrome_browser_main_extra_parts.h"
#include "chrome/browser/component_updater/registration.h"
#include "chrome/browser/enterprise/browser_management/management_service_factory.h"
#include "chrome/browser/language/url_language_histogram_factory.h"
#include "chrome/browser/lifetime/browser_shutdown.h"
#include "chrome/browser/media/router/chrome_media_router_factory.h"
#include "chrome/browser/media/webrtc/media_capture_devices_dispatcher.h"
#include "chrome/browser/media/webrtc/webrtc_log_util.h"
#include "chrome/browser/metrics/chrome_feature_list_creator.h"
#include "chrome/browser/metrics/chrome_metrics_service_accessor.h"
#include "chrome/browser/metrics/expired_histograms_array.h"
#include "chrome/browser/metrics/shutdown_watcher_helper.h"
#include "chrome/browser/net/system_network_context_manager.h"
#include "chrome/browser/policy/chrome_browser_policy_connector.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/profiles/profile_manager.h"
#include "chrome/browser/profiles/profile_manager_observer.h"
#include "chrome/browser/profiles/profiles_state.h"
#include "chrome/browser/sessions/chrome_serialized_navigation_driver.h"
#include "chrome/browser/shell_integration.h"
#include "chrome/browser/startup_data.h"
#include "chrome/browser/translate/chrome_translate_client.h"
#include "chrome/browser/translate/translate_service.h"
#include "chrome/browser/ui/actions/chrome_actions.h"
#include "chrome/browser/ui/color/chrome_color_mixers.h"
#include "chrome/browser/ui/javascript_dialogs/chrome_javascript_app_modal_dialog_view_factory.h"
#include "chrome/browser/ui/profiles/profile_error_dialog.h"
#include "chrome/browser/ui/startup/bad_flags_prompt.h"
#include "chrome/browser/ui/webui/chrome_untrusted_web_ui_configs.h"
#include "chrome/browser/ui/webui/chrome_web_ui_configs.h"
#include "chrome/browser/ui/webui/chrome_web_ui_controller_factory.h"
#include "chrome/common/chrome_features.h"
#include "chrome/common/chrome_paths.h"
#include "chrome/common/chrome_result_codes.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/crash_keys.h"
#include "chrome/common/media/media_resource_provider.h"
#include "chrome/common/net/net_resource_provider.h"
#include "chrome/common/pref_names.h"
#include "chrome/common/profiler/core_unwinders.h"
#include "chrome/common/profiler/thread_profiler_configuration.h"
#include "chrome/grit/branded_strings.h"
#include "chrome/grit/generated_resources.h"
#include "chrome/installer/util/google_update_settings.h"
#include "components/color/color_mixers.h"
#include "components/device_event_log/device_event_log.h"
#include "components/embedder_support/origin_trials/component_updater_utils.h"
#include "components/embedder_support/origin_trials/origin_trials_settings_storage.h"
#include "components/heap_profiling/in_process/heap_profiler_controller.h"
#include "components/keyed_service/content/browser_context_dependency_manager.h"
#include "components/language/content/browser/geo_language_provider.h"
#include "components/language/core/browser/language_usage_metrics.h"
#include "components/language/core/browser/pref_names.h"
#include "components/language/core/common/language_util.h"
#include "components/metrics/content/subprocess_metrics_provider.h"
#include "components/metrics/expired_histogram_util.h"
#include "components/metrics/metrics_service.h"
#include "components/metrics/metrics_shutdown.h"
#include "components/nacl/common/buildflags.h"
#include "components/offline_pages/buildflags/buildflags.h"
#include "components/policy/core/browser/policy_data_utils.h"
#include "components/policy/core/common/cloud/machine_level_user_cloud_policy_manager.h"
#include "components/prefs/pref_service.h"
#include "components/sampling_profiler/process_type.h"
#include "components/sampling_profiler/thread_profiler.h"
#include "components/sessions/content/content_serialized_navigation_driver.h"
#include "components/site_isolation/site_isolation_policy.h"
#include "components/spellcheck/spellcheck_buildflags.h"
#include "components/startup_metric_utils/browser/startup_metric_utils.h"
#include "components/tracing/common/background_tracing_utils.h"
#include "components/translate/core/browser/translate_metrics_logger_impl.h"
#include "components/variations/service/variations_service.h"
#include "components/variations/synthetic_trials_active_group_id_provider.h"
#include "components/variations/variations_ids_provider.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/synthetic_trial_syncer.h"
#include "content/public/browser/web_ui_controller_factory.h"
#include "content/public/common/content_features.h"
#include "content/public/common/content_switches.h"
#include "media/audio/audio_manager.h"
#include "media/base/localized_strings.h"
#include "net/base/data_url.h"
#include "net/base/net_module.h"
#include "pdf/buildflags.h"
#include "rlz/buildflags/buildflags.h"
#include "services/tracing/public/cpp/stack_sampling/tracing_sampler_profiler.h"
#include "third_party/blink/public/common/origin_trials/origin_trials_settings_provider.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/color/color_provider_manager.h"

// Per-platform #include blocks, in alphabetical order.

#if BUILDFLAG(IS_ANDROID)
#include "base/notreached.h"
#include "chrome/browser/flags/android/chrome_feature_list.h"
#include "chrome/browser/share/share_history.h"
#include "chrome/browser/ui/page_info/chrome_page_info_client.h"
#include "components/page_info/android/page_info_client.h"
#else
#include <vector>

#include "base/no_destructor.h"
#include "chrome/browser/profiles/delete_profile_helper.h"
#include "chrome/browser/resource_coordinator/tab_manager.h"
#include "chrome/browser/resources_integrity.h"
#include "chrome/browser/ui/uma_browsing_activity_observer.h"
#include "chrome/browser/upgrade_detector/upgrade_detector.h"
#include "chrome/browser/usb/web_usb_detector.h"
#include "chrome/browser/win/browser_util.h"
#include "components/soda/soda_installer.h"
#endif

#if !BUILDFLAG(IS_ANDROID) || BUILDFLAG(ENABLE_RLZ)
#include "base/time/time.h"
#endif

#if BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_CHROMEOS) || BUILDFLAG(IS_LINUX) || \
    BUILDFLAG(IS_MAC) || BUILDFLAG(IS_WIN)
#include "sql/database.h"
#endif

#if BUILDFLAG(IS_ANDROID) || BUILDFLAG(ENABLE_PROCESS_SINGLETON)
#include "base/check_op.h"
#endif

#if BUILDFLAG(IS_CHROMEOS)
#include "ash/constants/ash_features.h"
#include "base/process/process.h"
#include "base/task/task_traits.h"
#include "chrome/browser/ash/profiles/profile_helper.h"
#include "chrome/browser/ash/settings/hardware_data_usage_controller.h"
#include "chrome/browser/ash/settings/stats_reporting_controller.h"
#include "chrome/browser/browser_process_platform_part_ash.h"
#include "chromeos/ash/components/browser_context_helper/browser_context_types.h"
#include "chromeos/ash/experiences/arc/metrics/stability_metrics_manager.h"

#if BUILDFLAG(GOOGLE_CHROME_BRANDING)
#include "chrome/browser/extensions/component_loader.h"
#endif
#else
#include "components/enterprise/browser/controller/chrome_browser_cloud_management_controller.h"
#endif  // BUILDFLAG(IS_CHROMEOS)

#if BUILDFLAG(IS_LINUX)
#include "chrome/browser/first_run/upgrade_util_linux.h"
#endif

#if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_MAC) || BUILDFLAG(IS_WIN)
#include "chrome/browser/headless/headless_mode_metrics.h"  // nogncheck
#include "chrome/browser/headless/headless_mode_util.h"     // nogncheck
#include "chrome/browser/metrics/desktop_session_duration/desktop_session_duration_tracker.h"
#include "chrome/browser/metrics/desktop_session_duration/touch_mode_stats_tracker.h"
#include "chrome/browser/profiles/profile_activity_metrics_recorder.h"
#include "components/headless/select_file_dialog/headless_select_file_dialog.h"
#include "ui/base/pointer/touch_ui_controller.h"
#include "ui/gfx/switches.h"
#endif

#if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_WIN)
#include "chrome/browser/first_run/upgrade_util.h"
#endif

#if BUILDFLAG(IS_MAC)
#include <Security/Security.h>

#include "chrome/browser/ui/ui_features.h"

#if defined(ARCH_CPU_X86_64)
#include "base/mac/mac_util.h"
#include "base/threading/platform_thread.h"
#endif
#endif  // BUILDFLAG(IS_MAC)

#if (BUILDFLAG(IS_MAC) && defined(ARCH_CPU_X86_64)) || \
    BUILDFLAG(CHROME_FOR_TESTING)
#include "base/logging.h"
#endif

#if BUILDFLAG(IS_WIN)
#include "chrome/browser/chrome_browser_main_win.h"
#include "chrome/browser/first_run/upgrade_util_win.h"
#include "chrome/browser/notifications/win/notification_launch_id.h"
#include "chrome/browser/ui/network_profile_bubble.h"
#include "chrome/browser/win/chrome_select_file_dialog_factory.h"
#include "chrome/browser/win/parental_controls.h"
#include "ui/shell_dialogs/select_file_dialog.h"

#if BUILDFLAG(USE_BROWSER_SPELLCHECKER)
#include "chrome/browser/spellchecker/spellcheck_factory.h"
#include "components/spellcheck/browser/pref_names.h"
#include "components/spellcheck/common/spellcheck_features.h"
#endif
#endif  // BUILDFLAG(IS_WIN)

// Feature-specific #includes, in alphabetical order.

#if BUILDFLAG(ENABLE_BACKGROUND_MODE)
#include "chrome/browser/background/extensions/background_mode_manager.h"
#endif  // BUILDFLAG(ENABLE_BACKGROUND_MODE)

#if BUILDFLAG(ENABLE_EXTENSIONS)
#include "extensions/components/javascript_dialog_extensions_client/javascript_dialog_extension_client_impl.h"
#endif

#if BUILDFLAG(ENABLE_NACL)
#include "chrome/browser/nacl_host/nacl_browser_delegate_impl.h"
#include "components/nacl/browser/nacl_browser.h"
#include "components/nacl/browser/nacl_process_host.h"
#endif

#if BUILDFLAG(ENABLE_OFFLINE_PAGES)
#include "chrome/browser/offline_pages/offline_page_info_handler.h"
#endif

#if BUILDFLAG(ENABLE_PDF)
#include "chrome/browser/pdf/pdf_pref_names.h"
#include "pdf/pdf_features.h"
#endif

#if BUILDFLAG(ENABLE_PRINTING)
#include "chrome/common/printing/printing_init.h"

#if BUILDFLAG(ENABLE_OOP_PRINTING)
#include "chrome/browser/printing/oop_features.h"
#include "chrome/browser/printing/printing_init.h"
#endif
#endif  // BUILDFLAG(ENABLE_PRINTING)

#if BUILDFLAG(ENABLE_PRINT_PREVIEW) && !defined(OFFICIAL_BUILD)
#include "printing/printed_document.h"
#endif

#if BUILDFLAG(ENABLE_PROCESS_SINGLETON)
#include "chrome/browser/chrome_process_singleton.h"
#include "chrome/browser/ui/startup/startup_browser_creator.h"

#if BUILDFLAG(IS_LINUX)
#include "base/nix/xdg_util.h"
#endif
#endif  // BUILDFLAG(ENABLE_PROCESS_SINGLETON)

#if BUILDFLAG(ENABLE_RLZ) && !BUILDFLAG(IS_CHROMEOS)
#include <cmath>

#include "chrome/browser/first_run/first_run.h"
#include "chrome/browser/rlz/chrome_rlz_tracker_delegate.h"
#include "components/rlz/rlz_tracker.h"  // nogncheck crbug.com/1125897
#endif

#if BUILDFLAG(ENABLE_UPDATER)
#include "chrome/browser/updater/scheduler.h"
#endif

#if defined(USE_AURA)
#include "ui/aura/env.h"
#endif

namespace {
#if BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_CHROMEOS) || BUILDFLAG(IS_LINUX) || \
    BUILDFLAG(IS_MAC) || BUILDFLAG(IS_WIN)
constexpr base::FilePath::CharType kMediaHistoryDatabaseName[] =
    FILE_PATH_LITERAL("Media History");

void DeleteMediaHistoryDatabase(const base::FilePath& profile_path) {
  auto db_path = profile_path.Append(kMediaHistoryDatabaseName);
  base::UmaHistogramBoolean("Media.MediaHistory.DatabaseExists",
                            base::PathExists(db_path));
  sql::Database::Delete(db_path);
}
#endif

#if !BUILDFLAG(IS_ANDROID)
// Initialized in PreMainMessageLoopRun() and handed off to content:: in
// WillRunMainMessageLoop() (or in TakeRunLoopForTest() in tests)
std::unique_ptr<base::RunLoop>& GetMainRunLoopInstance() {
  static base::NoDestructor<std::unique_ptr<base::RunLoop>>
      main_run_loop_instance;
  return *main_run_loop_instance;
}
#endif

// This function provides some ways to test crash and assertion handling
// behavior of the program.
void HandleTestParameters(const base::CommandLine& command_line) {
  // This parameter causes a null pointer crash (crash reporter trigger).
  if (command_line.HasSwitch(switches::kBrowserCrashTest)) {
    base::ImmediateCrash();
  }
}

// Initializes the initial profile, possibly doing some user prompting to pick
// a fallback profile. Returns either
// - kBrowserWindow mode with the newly created profile,
// - kProfilePicker mode indicating that the profile picker should be shown;
//   the profile is a guest profile in this case, or
// - kError mode with a nullptr profile if startup should not continue.
StartupProfileInfo CreateInitialProfile(
    const base::FilePath& user_data_dir,
    const base::CommandLine& parsed_command_line) {
  TRACE_EVENT0("startup", "ChromeBrowserMainParts::CreateProfile");
  base::Time start = base::Time::Now();

  bool last_used_profile_set = false;

// If the browser is launched due to activation on Windows native
// notification, the profile id encoded in the notification launch id should
// be chosen over all others.
#if BUILDFLAG(IS_WIN)
  base::FilePath profile_basename =
      NotificationLaunchId::GetNotificationLaunchProfileBaseName(
          parsed_command_line);
  if (!profile_basename.empty()) {
    profiles::SetLastUsedProfile(profile_basename);
    last_used_profile_set = true;
  }
#endif

  bool profile_dir_specified =
      profiles::IsMultipleProfilesEnabled() &&
      parsed_command_line.HasSwitch(switches::kProfileDirectory);
  base::FilePath last_used_profile;
  if (!last_used_profile_set && profile_dir_specified) {
    last_used_profile =
        parsed_command_line.GetSwitchValuePath(switches::kProfileDirectory);
  }
  if (parsed_command_line.HasSwitch(
          switches::kIgnoreProfileDirectoryIfNotExists) &&
      !base::DirectoryExists(user_data_dir.Append(last_used_profile))) {
    last_used_profile.clear();
  }
  if (!last_used_profile.empty()) {
    profiles::SetLastUsedProfile(last_used_profile);
    last_used_profile_set = true;
  }

  if (last_used_profile_set &&
      !parsed_command_line.HasSwitch(switches::kAppId)) {
    // Clear kProfilesLastActive since the user only wants to launch a specific
    // profile. Don't clear it if the user launched a web app, in order to not
    // break any subsequent multi-profile session restore.
    g_browser_process->local_state()->SetList(prefs::kProfilesLastActive,
                                              base::Value::List());
  }

  StartupProfileInfo profile_info;
#if BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_CHROMEOS)
  profile_info = {ProfileManager::CreateInitialProfile(),
                  StartupProfileMode::kBrowserWindow};

  // TODO(port): fix this. See comments near the definition of |user_data_dir|.
  // It is better to CHECK-fail here than it is to silently exit because of
  // missing code in the above test.
  CHECK(profile_info.profile) << "Cannot get default profile.";

#else
  profile_info =
      GetStartupProfile(/*cur_dir=*/base::FilePath(), parsed_command_line);

  if (profile_info.mode == StartupProfileMode::kError &&
      !last_used_profile_set) {
    profile_info = GetFallbackStartupProfile();
    base::UmaHistogramEnumeration(
        "ProfilePicker.StartupMode.FallbackProfileUsed", profile_info.mode);
  }

  if (profile_info.mode == StartupProfileMode::kError) {
    ProfileErrorType error_type =
        profile_dir_specified ? ProfileErrorType::CREATE_FAILURE_SPECIFIED
                              : ProfileErrorType::CREATE_FAILURE_ALL;

    // TODO(lwchkg): What diagnostics do you want to include in the feedback
    // report when an error occurs?
    ShowProfileErrorDialog(error_type, IDS_COULDNT_STARTUP_PROFILE_ERROR,
                           "Error creating initial profile.");
    return profile_info;
  }
#endif

  UMA_HISTOGRAM_LONG_TIMES(
      "Startup.CreateFirstProfile", base::Time::Now() - start);
  return profile_info;
}

#if BUILDFLAG(IS_MAC)
OSStatus KeychainCallback(SecKeychainEvent keychain_event,
                          SecKeychainCallbackInfo* info, void* context) {
  return noErr;
}
#endif

#if BUILDFLAG(ENABLE_PROCESS_SINGLETON)
void ProcessSingletonNotificationCallbackImpl(
    base::CommandLine command_line,
    const base::FilePath& current_directory) {
  // Drop the request if the browser process is already shutting down.
  if (!g_browser_process || g_browser_process->IsShuttingDown() ||
      browser_shutdown::HasShutdownStarted()) {
    return;
  }

#if BUILDFLAG(IS_WIN)
  // The uninstall command-line switch is handled by the origin process; see
  // ChromeMainDelegate::PostEarlyInitialization(...). The other process won't
  // be able to become the singleton process and will display a window asking
  // the user to close running Chrome instances.
  if (command_line.HasSwitch(switches::kUninstall)) {
    return;
  }
#endif

#if BUILDFLAG(IS_LINUX)
  // Set the global activation token sent as a command line switch by another
  // browser process. This also removes the switch after use to prevent any side
  // effects of leaving it in the command line after this point.
  base::nix::ExtractXdgActivationTokenFromCmdLine(command_line);
#endif

  StartupProfilePathInfo startup_profile_path_info =
      GetStartupProfilePath(current_directory, command_line,
                            /*ignore_profile_picker=*/false);
  DCHECK_NE(startup_profile_path_info.reason, StartupProfileModeReason::kError);
  base::UmaHistogramEnumeration(
      "ProfilePicker.StartupMode.NotificationCallback",
      StartupProfileModeFromReason(startup_profile_path_info.reason));
  base::UmaHistogramEnumeration(
      "ProfilePicker.StartupReason.NotificationCallback",
      startup_profile_path_info.reason);

  StartupBrowserCreator::ProcessCommandLineAlreadyRunning(
      command_line, current_directory, startup_profile_path_info);

  // Record now as the last successful chrome start.
  if constexpr (kShouldRecordActiveUse) {
    GoogleUpdateSettings::SetLastRunTime();
  }
}
#endif  // BUILDFLAG(ENABLE_PROCESS_SINGLETON)

#if !BUILDFLAG(IS_ANDROID)
bool ShouldInstallSodaDuringPostProfileInit(
    const base::CommandLine& command_line,
    const Profile* const profile) {
#if BUILDFLAG(IS_CHROMEOS)
  return base::FeatureList::IsEnabled(
             ash::features::kOnDeviceSpeechRecognition) &&
         ash::IsUserBrowserContext(const_cast<Profile*>(profile));
#else
  return !command_line.HasSwitch(switches::kDisableComponentUpdate);
#endif
}
#endif  // !BUILDFLAG(IS_ANDROID)

void DisallowKeyedServiceFactoryRegistration() {
  // From this point, do not allow KeyedServiceFactories to be registered, all
  // factories should be registered in the main registration function
  // `ChromeBrowserMainExtraPartsProfiles::EnsureBrowserContextKeyedServiceFactoriesBuilt()`.
  BrowserContextDependencyManager::GetInstance()
      ->DisallowKeyedServiceFactoryRegistration(
          "ChromeBrowserMainExtraPartsProfiles::"
          "EnsureBrowserContextKeyedServiceFactoriesBuilt()");
}

#if !BUILDFLAG(IS_ANDROID)
void StartWatchingForProcessShutdownHangs() {
  // This HangWatcher scope is covering the shutdown phase up to the end of the
  // process. Intentionally leak this instance so that it is not destroyed
  // before process termination.
  base::HangWatcher::SetShuttingDown();
  auto* watcher = new base::WatchHangsInScope(base::Seconds(30));
  ANNOTATE_LEAKING_OBJECT_PTR(watcher);
  std::ignore = watcher;
}
#endif

}  // namespace

// ChromeBrowserMainParts::ProfileInitManager ----------------------------------

// Runs `CallPostProfileInit()` on all existing and future profiles, the
// initial profile is processed first. The initial profile is nullptr when the
// profile picker is shown.
class ChromeBrowserMainParts::ProfileInitManager
    : public ProfileManagerObserver {
 public:
  ProfileInitManager(ChromeBrowserMainParts* browser_main,
                     Profile* initial_profile);
  ~ProfileInitManager() override;

  ProfileInitManager(const ProfileInitManager&) = delete;
  ProfileInitManager& operator=(const ProfileInitManager&) = delete;

  // ProfileManagerObserver:
  void OnProfileAdded(Profile* profile) override;
  void OnProfileManagerDestroying() override;

 private:
  base::ScopedObservation<ProfileManager, ProfileManagerObserver>
      profile_manager_observer_{this};
  // Raw pointer. This is safe because `ChromeBrowserMainParts` owns `this`.
  const raw_ptr<ChromeBrowserMainParts> browser_main_;
};

ChromeBrowserMainParts::ProfileInitManager::ProfileInitManager(
    ChromeBrowserMainParts* browser_main,
    Profile* initial_profile)
    : browser_main_(browser_main) {
  // `initial_profile` is null when the profile picker is shown.
  if (initial_profile) {
    browser_main_->CallPostProfileInit(initial_profile);
  }

  // Run `CallPostProfileInit()` on the other existing and future profiles.
  ProfileManager* profile_manager = g_browser_process->profile_manager();
  // Register the observer first, in case `OnProfileAdded()` causes a creation.
  profile_manager_observer_.Observe(profile_manager);
  for (auto* profile : profile_manager->GetLoadedProfiles()) {
    DCHECK(profile);
    if (profile == initial_profile) {
      continue;
    }
    OnProfileAdded(profile);
  }
}

ChromeBrowserMainParts::ProfileInitManager::~ProfileInitManager() = default;

void ChromeBrowserMainParts::ProfileInitManager::OnProfileAdded(
    Profile* profile) {
  if (profile->IsSystemProfile() || profile->IsGuestSession()) {
    // Ignore the system profile that is used for displaying the profile picker,
    // and the "parent" guest profile. `CallPostProfileInit()` should be called
    // only for profiles that are used for browsing.
    return;
  }

#if BUILDFLAG(IS_CHROMEOS)
  // Ignore ChromeOS helper profiles (sign-in, lockscreen, etc).
  if (!ash::ProfileHelper::IsUserProfile(profile)) {
    // Notify of new profile initialization only for regular profiles. The
    // startup profile initialization is triggered by another code path.
    return;
  }
#endif

  browser_main_->CallPostProfileInit(profile);
}

void ChromeBrowserMainParts::ProfileInitManager::OnProfileManagerDestroying() {
  profile_manager_observer_.Reset();
}

// BrowserMainParts ------------------------------------------------------------

ChromeBrowserMainParts::ChromeBrowserMainParts(bool is_integration_test,
                                               StartupData* startup_data)
    : is_integration_test_(is_integration_test), startup_data_(startup_data) {
  DCHECK(startup_data_);
#if BUILDFLAG(IS_CHROMEOS) && BUILDFLAG(GOOGLE_CHROME_BRANDING)
  if (is_integration_test_) {
    extensions::ComponentLoader::DisableHelpAppForTesting();
  }
#endif
}

ChromeBrowserMainParts::~ChromeBrowserMainParts() {
  // Delete parts in the reverse of the order they were added.
  while (!chrome_extra_parts_.empty())
    chrome_extra_parts_.pop_back();
}

void ChromeBrowserMainParts::SetupMetrics() {
  TRACE_EVENT0("startup", "ChromeBrowserMainParts::SetupMetrics");
  CHECK(metrics::SubprocessMetricsProvider::CreateInstance());
  metrics::MetricsService* metrics = browser_process_->metrics_service();
  metrics->GetSyntheticTrialRegistry()->AddObserver(
      variations::VariationsIdsProvider::GetInstance());
  metrics->GetSyntheticTrialRegistry()->AddObserver(
      variations::SyntheticTrialsActiveGroupIdProvider::GetInstance());
  synthetic_trial_syncer_ = content::SyntheticTrialSyncer::Create(
      metrics->GetSyntheticTrialRegistry());
  // Now that field trials have been created, initializes metrics recording.
  metrics->InitializeMetricsRecordingState();

  startup_data_->chrome_feature_list_creator()
      ->browser_field_trials()
      ->RegisterSyntheticTrials();
}

// static
void ChromeBrowserMainParts::StartMetricsRecording() {
  TRACE_EVENT0("startup", "ChromeBrowserMainParts::StartMetricsRecording");

  // Register synthetic field trials for the sampling profiler configurations
  // that were already chosen.
  std::string trial_name, group_name;
  if (ThreadProfilerConfiguration::Get()->GetSyntheticFieldTrial(&trial_name,
                                                                 &group_name)) {
    ChromeMetricsServiceAccessor::RegisterSyntheticFieldTrial(trial_name,
                                                              group_name);
  }
  auto* heap_profiler_controller =
      heap_profiling::HeapProfilerController::GetInstance();
  if (heap_profiler_controller &&
      heap_profiler_controller->GetSyntheticFieldTrial(trial_name,
                                                       group_name)) {
    ChromeMetricsServiceAccessor::RegisterSyntheticFieldTrial(
        trial_name, group_name,
        variations::SyntheticTrialAnnotationMode::kCurrentLog);
  }

#if BUILDFLAG(IS_ANDROID)
  // Android updates the metrics service dynamically depending on whether the
  // application is in the foreground or not. Do not start here unless
  // kUmaBackgroundSessions is enabled.
  if (!base::FeatureList::IsEnabled(chrome::android::kUmaBackgroundSessions))
    return;
#endif

  g_browser_process->metrics_service()->CheckForClonedInstall();

#if BUILDFLAG(IS_WIN)
  if (base::TimeTicks::GetHighResolutionTimeTicksFieldTrial(&trial_name,
                                                            &group_name)) {
    ChromeMetricsServiceAccessor::RegisterSyntheticFieldTrial(
        trial_name, group_name,
        variations::SyntheticTrialAnnotationMode::kCurrentLog);
  }

  // The last live timestamp is used to assess whether a browser crash occurred
  // due to a full system crash. Update the last live timestamp on a slow
  // schedule to get the bast possible accuracy for the assessment.
  g_browser_process->metrics_service()->StartUpdatingLastLiveTimestamp();
#endif

  g_browser_process->GetMetricsServicesManager()->UpdateUploadPermissions();
}

void ChromeBrowserMainParts::RecordBrowserStartupTime() {
  // Don't record any metrics if UI was displayed before this point e.g.
  // warning dialogs or browser was started in background mode.
  if (startup_metric_utils::GetBrowser().WasMainWindowStartupInterrupted()) {
    return;
  }

  bool is_first_run = false;
#if !BUILDFLAG(IS_ANDROID)
  // On Android, first run is handled in Java code, and the C++ side of Chrome
  // doesn't know if this is the first run. This will cause some inaccuracy in
  // the UMA statistics, but this should be minor (first runs are rare).
  is_first_run = first_run::IsChromeFirstRun();
#endif

  // Record collected startup metrics.
  startup_metric_utils::GetBrowser().RecordBrowserMainMessageLoopStart(
      base::TimeTicks::Now(), is_first_run);
}

// -----------------------------------------------------------------------------
// TODO(viettrungluu): move more/rest of BrowserMain() into BrowserMainParts.

#if BUILDFLAG(IS_WIN)
#define DLLEXPORT __declspec(dllexport)

// We use extern C for the prototype DLLEXPORT to avoid C++ name mangling.
extern "C" {
DLLEXPORT void __cdecl RelaunchChromeBrowserWithNewCommandLineIfNeeded();
}

DLLEXPORT void __cdecl RelaunchChromeBrowserWithNewCommandLineIfNeeded() {
  // Need an instance of AtExitManager to handle singleton creations and
  // deletions.  We need this new instance because, the old instance created
  // in ChromeMain() got destructed when the function returned.
  base::AtExitManager exit_manager;
  upgrade_util::RelaunchChromeBrowserWithNewCommandLineIfNeeded();
}
#endif

// content::BrowserMainParts implementation ------------------------------------

int ChromeBrowserMainParts::PreEarlyInitialization() {
  TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreEarlyInitialization");
  for (auto& chrome_extra_part : chrome_extra_parts_)
    chrome_extra_part->PreEarlyInitialization();

  // Create BrowserProcess in PreEarlyInitialization() so that we can load
  // field trials (and all it depends upon).
  browser_process_ = std::make_unique<BrowserProcessImpl>(startup_data_);

#if BUILDFLAG(IS_ANDROID)
  startup_data_->CreateProfilePrefService();
#endif

  bool failed_to_load_resource_bundle = false;
  const int load_local_state_result =
      OnLocalStateLoaded(&failed_to_load_resource_bundle);

  // Reuses the MetricsServicesManager and GetMetricsServicesManagerClient
  // instances created in the FeatureListCreator so they won't be created
  // again.
  auto* chrome_feature_list_creator =
      startup_data_->chrome_feature_list_creator();
  browser_process_->SetMetricsServices(
      chrome_feature_list_creator->TakeMetricsServicesManager(),
      chrome_feature_list_creator->GetMetricsServicesManagerClient());

  if (load_local_state_result == CHROME_RESULT_CODE_MISSING_DATA &&
      failed_to_load_resource_bundle) {
    if (base::CommandLine::ForCurrentProcess()->HasSwitch(
            switches::kNoErrorDialogs)) {
      return CHROME_RESULT_CODE_MISSING_DATA;
    }
    // Continue on and show error later (once UI has been initialized and main
    // message loop is running).
    return content::RESULT_CODE_NORMAL_EXIT;
  }

  return load_local_state_result;
}

void ChromeBrowserMainParts::PostEarlyInitialization() {
  TRACE_EVENT0("startup", "ChromeBrowserMainParts::PostEarlyInitialization");
  for (auto& chrome_extra_part : chrome_extra_parts_)
    chrome_extra_part->PostEarlyInitialization();
}

void ChromeBrowserMainParts::ToolkitInitialized() {
  TRACE_EVENT0("startup", "ChromeBrowserMainParts::ToolkitInitialized");

  for (auto& chrome_extra_part : chrome_extra_parts_)
    chrome_extra_part->ToolkitInitialized();

  // Comes after the extra parts' calls since on GTK that builds the native
  // theme that, in turn, adds the GTK core color mixer; core mixers should all
  // be added before we add chrome mixers.
  ui::ColorProviderManager::Get().AppendColorProviderInitializer(
      base::BindRepeating(color::AddComponentsColorMixers));
  ui::ColorProviderManager::Get().AppendColorProviderInitializer(
      base::BindRepeating(AddChromeColorMixers));

  InitializeActionIdStringMapping();
}

void ChromeBrowserMainParts::PreCreateMainMessageLoop() {
  TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreCreateMainMessageLoop");

  for (auto& chrome_extra_part : chrome_extra_parts_)
    chrome_extra_part->PreCreateMainMessageLoop();

#if BUILDFLAG(ENABLE_UPDATER)
  updater::SchedulePeriodicTasks();
#endif
}

void ChromeBrowserMainParts::PostCreateMainMessageLoop() {
  TRACE_EVENT0("startup", "ChromeBrowserMainParts::PostCreateMainMessageLoop");

#if !BUILDFLAG(IS_ANDROID)
  // Initialize the upgrade detector here after `ChromeBrowserMainPartsAsh`
  // has had a chance to connect the DBus services.
  UpgradeDetector::GetInstance()->Init();
#endif

  sampling_profiler::ThreadProfiler::SetMainThreadTaskRunner(
      base::SingleThreadTaskRunner::GetCurrentDefault());

  // device_event_log must be initialized after the message loop. Calls to
  // {DEVICE}_LOG prior to here will only be logged with VLOG. Some
  // platforms (e.g. chromeos) may have already initialized this.
  if (!device_event_log::IsInitialized())
    device_event_log::Initialize(0 /* default max entries */);

  // Set up and register ERP reporting client.
  reporting_client_ =
      reporting::ReportingClient::Create(content::GetUIThreadTaskRunner({}));

  for (auto& chrome_extra_part : chrome_extra_parts_)
    chrome_extra_part->PostCreateMainMessageLoop();
}

int ChromeBrowserMainParts::PreCreateThreads() {
  // IMPORTANT
  // Calls in this function should not post tasks or create threads as
  // components used to handle those tasks are not yet available. This work
  // should be deferred to PreMainMessageLoopRunImpl.

  TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreCreateThreads");
  result_code_ = PreCreateThreadsImpl();

  if (result_code_ == content::RESULT_CODE_NORMAL_EXIT) {
    // These members must be initialized before exiting this function normally.
#if !BUILDFLAG(IS_ANDROID)
    DCHECK(browser_creator_.get());
#if !BUILDFLAG(IS_CHROMEOS)
    DCHECK(master_prefs_.get());
#endif
#endif

    for (auto& chrome_extra_part : chrome_extra_parts_)
      chrome_extra_part->PreCreateThreads();
  }

  // Create an instance of GpuModeManager to watch gpu mode pref change.
  g_browser_process->gpu_mode_manager();

  return result_code_;
}

int ChromeBrowserMainParts::OnLocalStateLoaded(
    bool* failed_to_load_resource_bundle) {
  *failed_to_load_resource_bundle = false;
  if (!base::PathService::Get(chrome::DIR_USER_DATA, &user_data_dir_))
    return CHROME_RESULT_CODE_MISSING_DATA;

  auto* platform_management_service =
      policy::ManagementServiceFactory::GetForPlatform();
  platform_management_service->UsePrefServiceAsCache(
      browser_process_->local_state());
  platform_management_service->RefreshCache(base::NullCallback());

#if BUILDFLAG(IS_WIN)
  if (first_run::IsChromeFirstRun()) {
    bool stats_default;
    if (GoogleUpdateSettings::GetCollectStatsConsentDefault(&stats_default)) {
      // |stats_default| == true means that the default state of consent for the
      // product at the time of install was to report usage statistics, meaning
      // "opt-out".
      metrics::RecordMetricsReportingDefaultState(
          browser_process_->local_state(),
          stats_default ? metrics::EnableMetricsDefault::OPT_OUT
                        : metrics::EnableMetricsDefault::OPT_IN);
    }
  }
#endif

  if (startup_data_->chrome_feature_list_creator()->actual_locale().empty()) {
    *failed_to_load_resource_bundle = true;
    return CHROME_RESULT_CODE_MISSING_DATA;
  }

  const int apply_first_run_result = ApplyFirstRunPrefs();
  if (apply_first_run_result != content::RESULT_CODE_NORMAL_EXIT)
    return apply_first_run_result;

  embedder_support::OriginTrialsSettingsStorage*
      origin_trials_settings_storage =
          browser_process_->GetOriginTrialsSettingsStorage();
  embedder_support::SetupOriginTrialsCommandLineAndSettings(
      browser_process_->local_state(), origin_trials_settings_storage);
  blink::OriginTrialsSettingsProvider::Get()->SetSettings(
      origin_trials_settings_storage->GetSettings());

  metrics::EnableExpiryChecker(chrome_metrics::kExpiredHistogramsHashes);

  return content::RESULT_CODE_NORMAL_EXIT;
}

int ChromeBrowserMainParts::ApplyFirstRunPrefs() {
// Android does first run in Java instead of native.
// Chrome OS has its own out-of-box-experience code.
#if !BUILDFLAG(IS_ANDROID) && !BUILDFLAG(IS_CHROMEOS)
  master_prefs_ = std::make_unique<first_run::MasterPrefs>();

  std::unique_ptr<installer::InitialPreferences> installer_initial_prefs =
      startup_data_->chrome_feature_list_creator()->TakeInitialPrefs();
  if (!installer_initial_prefs)
    return content::RESULT_CODE_NORMAL_EXIT;

  // On first run, we need to process the predictor preferences before the
  // browser's profile_manager object is created, but after ResourceBundle
  // is initialized.
  first_run::ProcessInitialPreferencesResult pip_result =
      first_run::ProcessInitialPreferences(user_data_dir_,
                                           std::move(installer_initial_prefs),
                                           master_prefs_.get());
  if (pip_result == first_run::EULA_EXIT_NOW)
    return CHROME_RESULT_CODE_EULA_REFUSED;

  // TODO(macourteau): refactor preferences that are copied from
  // master_preferences into local_state, as a "local_state" section in
  // initial preferences. If possible, a generic solution would be preferred
  // over a copy one-by-one of specific preferences. Also see related TODO
  // in first_run.h.

  PrefService* local_state = g_browser_process->local_state();
  if (!master_prefs_->suppress_default_browser_prompt_for_version.empty()) {
    local_state->SetString(
        prefs::kBrowserSuppressDefaultBrowserPrompt,
        master_prefs_->suppress_default_browser_prompt_for_version);
  }
#if BUILDFLAG(IS_MAC)
  if (!master_prefs_->confirm_to_quit) {
    local_state->SetBoolean(prefs::kConfirmToQuitEnabled,
                            master_prefs_->confirm_to_quit);
  }
#endif
#endif  // !BUILDFLAG(IS_ANDROID) && !BUILDFLAG(IS_CHROMEOS)
  return content::RESULT_CODE_NORMAL_EXIT;
}

int ChromeBrowserMainParts::PreCreateThreadsImpl() {
  TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreCreateThreadsImpl");

  if (startup_data_->chrome_feature_list_creator()->actual_locale().empty()) {
    ShowMissingLocaleMessageBox();
    return CHROME_RESULT_CODE_MISSING_DATA;
  }

#if !BUILDFLAG(IS_ANDROID)
  MaybeShowInvalidUserDataDirWarningDialog();
#endif

  DCHECK(!user_data_dir_.empty());

  // Force MediaCaptureDevicesDispatcher to be created on UI thread.
  MediaCaptureDevicesDispatcher::GetInstance();

  // Android's first run is done in Java instead of native.
#if !BUILDFLAG(IS_ANDROID)
  // Cache first run state early.
  first_run::IsChromeFirstRun();
#endif

  PrefService* local_state = browser_process_->local_state();

#if BUILDFLAG(IS_CHROMEOS)
  browser_process_->platform_part()->InitializeCrosSettings();
  ash::StatsReportingController::Initialize(local_state);
  arc::StabilityMetricsManager::Initialize(local_state);
  ash::HWDataUsageController::Initialize(local_state);
#endif

  {
    TRACE_EVENT0(
        "startup",
        "ChromeBrowserMainParts::PreCreateThreadsImpl:InitBrowserProcessImpl");
    browser_process_->Init();
  }

#if !BUILDFLAG(IS_CHROMEOS)
  std::optional<std::string> managed_by =
      policy::GetManagedBy(browser_process_->browser_policy_connector()
                               ->machine_level_user_cloud_policy_manager());
  if (managed_by) {
    static constexpr std::string_view kEnrollmentDomain = "enrollment-domain";
    crash_keys::AllocateCrashKeyInBrowserAndChildren(kEnrollmentDomain,
                                                     managed_by.value());
  }
#endif

#if !BUILDFLAG(IS_ANDROID)
  // These members must be initialized before returning from this function.
  // Android doesn't use StartupBrowserCreator.
  browser_creator_ = std::make_unique<StartupBrowserCreator>();
  // TODO(yfriedman): Refactor Android to re-use UMABrowsingActivityObserver
  UMABrowsingActivityObserver::Init();
#endif

  // Reset the command line in the crash report details, since we may have
  // just changed it to include experiments.
  crash_keys::SetCrashKeysFromCommandLine(
      *base::CommandLine::ForCurrentProcess());

  browser_process_->browser_policy_connector()->OnResourceBundleCreated();

// Android does first run in Java instead of native.
// Chrome OS has its own out-of-box-experience code.
#if !BUILDFLAG(IS_ANDROID) && !BUILDFLAG(IS_CHROMEOS)
  if (first_run::IsChromeFirstRun()) {
    if (!base::CommandLine::ForCurrentProcess()->HasSwitch(switches::kApp) &&
        !base::CommandLine::ForCurrentProcess()->HasSwitch(switches::kAppId)) {
      browser_creator_->AddFirstRunTabs(master_prefs_->new_tabs);
    }

#if BUILDFLAG(IS_CHROMEOS) || BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_MAC)
    // Create directory for user-level Native Messaging manifest files. This
    // makes it less likely that the directory will be created by third-party
    // software with incorrect owner or permission. See crbug.com/725513 .
    base::FilePath user_native_messaging_dir;
    CHECK(base::PathService::Get(chrome::DIR_USER_NATIVE_MESSAGING,
                                 &user_native_messaging_dir));
    if (!base::PathExists(user_native_messaging_dir))
      base::CreateDirectory(user_native_messaging_dir);
#endif
  }
#endif  // !BUILDFLAG(IS_ANDROID) && !BUILDFLAG(IS_CHROMEOS)

#if BUILDFLAG(IS_MAC)
#if defined(ARCH_CPU_X86_64)
  // The use of Rosetta to run the x64 version of Chromium on Arm is neither
  // tested nor maintained, and there are reports of it crashing in weird ways
  // (e.g. https://crbug.com/1305353). Warn the user if this is the case, as
  // it's almost certainly accidental on their part.
  if (base::mac::GetCPUType() == base::mac::CPUType::kTranslatedIntel) {
    LOG(ERROR) << "The use of Rosetta to run the x64 version of Chromium on "
                  "Arm is neither tested nor maintained, and unexpected "
                  "behavior will likely result. Please check that all tools "
                  "that spawn Chromium are Arm-native.";
    base::PlatformThread::Sleep(base::Seconds(3));
  }
#endif

  // Get the Keychain API to register for distributed notifications on the main
  // thread, which has a proper CFRunloop, instead of later on the I/O thread,
  // which doesn't. This ensures those notifications will get delivered
  // properly. See issue 37766.
  // (Note that the callback mask here is empty. I don't want to register for
  // any callbacks, I just want to initialize the mechanism.)

  // Much of the Keychain API was marked deprecated as of the macOS 13 SDK.
  // Removal of its use is tracked in https://crbug.com/1348251 but deprecation
  // warnings are disabled in the meanwhile.
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
  SecKeychainAddCallback(&KeychainCallback, 0, nullptr);
#pragma clang diagnostic pop

#endif  // BUILDFLAG(IS_MAC)

#if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_MAC) || BUILDFLAG(IS_WIN)
  metrics::DesktopSessionDurationTracker::Initialize();
  ProfileActivityMetricsRecorder::Initialize();
  TouchModeStatsTracker::Initialize(
      metrics::DesktopSessionDurationTracker::Get(),
      ui::TouchUiController::Get());
#endif

  // Add Site Isolation switches as dictated by policy.
  auto* command_line = base::CommandLine::ForCurrentProcess();
  if (local_state->GetBoolean(prefs::kSitePerProcess) &&
      site_isolation::SiteIsolationPolicy::IsEnterprisePolicyApplicable() &&
      !command_line->HasSwitch(switches::kSitePerProcess)) {
    command_line->AppendSwitch(switches::kSitePerProcess);
  }
  // IsolateOrigins policy is taken care of through SiteIsolationPrefsObserver
  // (constructed and owned by BrowserProcessImpl).

  // We need to set the policy for data URLs since they can be created in
  // any process. The ChromeContentBrowserClient will take care of child
  // processes.
  if (!local_state->GetBoolean(prefs::kDataURLWhitespacePreservationEnabled) &&
      !command_line->HasSwitch(net::kRemoveWhitespaceForDataURLs)) {
    command_line->AppendSwitch(net::kRemoveWhitespaceForDataURLs);
  }

#if BUILDFLAG(IS_ANDROID)
  // The admin should also be able to use these policies to force Site Isolation
  // off (on Android; using enterprise policies to disable Site Isolation is not
  // supported on other platforms).  Note that disabling either SitePerProcess
  // or IsolateOrigins via policy will disable both types of isolation.
  if ((local_state->IsManagedPreference(prefs::kSitePerProcess) &&
       !local_state->GetBoolean(prefs::kSitePerProcess)) ||
      (local_state->IsManagedPreference(prefs::kIsolateOrigins) &&
       local_state->GetString(prefs::kIsolateOrigins).empty())) {
    base::CommandLine::ForCurrentProcess()->AppendSwitch(
        switches::kDisableSiteIsolationForPolicy);
  }
#endif

  // ChromeOS needs ui::ResourceBundle::InitSharedInstance to be called before
  // this.
  browser_process_->PreCreateThreads();

  // This must occur in PreCreateThreads() because it initializes global state
  // which is then read by all threads without synchronization. It must be after
  // browser_process_->PreCreateThreads() as that instantiates the IOThread
  // which is used in SetupMetrics().
  SetupMetrics();

  return content::RESULT_CODE_NORMAL_EXIT;
}

void ChromeBrowserMainParts::PostCreateThreads() {
  // This task should be posted after the IO thread starts, and prior to the
  // base version of the function being invoked. It is functionally okay to post
  // this task in method ChromeBrowserMainParts::BrowserThreadsStarted() which
  // we also need to add in this class, and call this method at the very top of
  // BrowserMainLoop::InitializeMainThread(). PostCreateThreads is preferred to
  // BrowserThreadsStarted as it matches the PreCreateThreads and CreateThreads
  // stages.
  content::GetIOThreadTaskRunner({})->PostTask(
      FROM_HERE,
      base::BindOnce(&sampling_profiler::ThreadProfiler::StartOnChildThread,
                     sampling_profiler::ProfilerThreadType::kIo));
// Sampling multiple threads might cause overhead on Android and we don't want
// to enable it unless the data is needed.
#if !BUILDFLAG(IS_ANDROID)
  // We pass in CreateCoreUnwindersFactory here since it lives in the chrome/
  // layer while TracingSamplerProfiler is outside of chrome/.
  content::GetIOThreadTaskRunner({})->PostTask(
      FROM_HERE,
      base::BindOnce(&tracing::TracingSamplerProfiler::
                         CreateOnChildThreadWithCustomUnwinders,
                     base::BindRepeating(&CreateCoreUnwindersFactory)));
#endif

#if BUILDFLAG(ENABLE_PROCESS_SINGLETON)
  ChromeProcessSingleton::GetInstance()->StartWatching();
#endif

  tracing::SetupSystemTracingFromFieldTrial();
  tracing::SetupBackgroundTracingFromCommandLine();
  tracing::SetupPresetTracingFromFieldTrial();
  base::trace_event::EmitNamedTrigger(
      base::trace_event::kStartupTracingTriggerName);

  for (auto& chrome_extra_part : chrome_extra_parts_)
    chrome_extra_part->PostCreateThreads();
}

int ChromeBrowserMainParts::PreMainMessageLoopRun() {
  TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreMainMessageLoopRun");

  result_code_ = PreMainMessageLoopRunImpl();

  for (auto& chrome_extra_part : chrome_extra_parts_)
    chrome_extra_part->PreMainMessageLoopRun();

  return result_code_;
}

// PreMainMessageLoopRun calls these extra stages in the following order:
//  PreMainMessageLoopRunImpl()
//   ... initial setup.
//   PreProfileInit()
//   ... additional setup, including CreateProfile()
//   PostProfileInit()
//   ... additional setup
//   PreBrowserStart()
//   ... browser_creator_->Start
//   PostBrowserStart()

void ChromeBrowserMainParts::PreProfileInit() {
  TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreProfileInit");

  media::AudioManager::SetGlobalAppName(
      l10n_util::GetStringUTF8(IDS_SHORT_PRODUCT_NAME));

  for (auto& chrome_extra_part : chrome_extra_parts_)
    chrome_extra_part->PreProfileInit();

  DisallowKeyedServiceFactoryRegistration();

#if !BUILDFLAG(IS_ANDROID)
  // Ephemeral profiles may have been left behind if the browser crashed.
  g_browser_process->profile_manager()
      ->GetDeleteProfileHelper()
      .CleanUpEphemeralProfiles();
  // Files of deleted profiles can also be left behind after a crash.
  g_browser_process->profile_manager()
      ->GetDeleteProfileHelper()
      .CleanUpDeletedProfiles();
#endif

#if BUILDFLAG(ENABLE_EXTENSIONS)
  javascript_dialog_extensions_client::InstallClient();
#endif

#if BUILDFLAG(IS_MAC)
  if (base::FeatureList::IsEnabled(features::kViewsJSAppModalDialog))
    InstallChromeJavaScriptAppModalDialogViewFactory();
  else
    InstallChromeJavaScriptAppModalDialogViewCocoaFactory();
#else
  InstallChromeJavaScriptAppModalDialogViewFactory();
#endif

#if BUILDFLAG(ENABLE_EXTENSIONS)
  SetChromeAppModalDialogManagerDelegate();
#endif

  media_router::ChromeMediaRouterFactory::DoPlatformInit();
}

void ChromeBrowserMainParts::CallPostProfileInit(Profile* profile) {
  DCHECK(profile);
  bool is_initial_profile = !initialized_initial_profile_;
  initialized_initial_profile_ = true;

  PostProfileInit(profile, is_initial_profile);
}

void ChromeBrowserMainParts::PostProfileInit(Profile* profile,
                                             bool is_initial_profile) {
  if (is_initial_profile) {
    TRACE_EVENT0("startup", "ChromeBrowserMainParts::PostProfileInit");
  }

  for (auto& chrome_extra_part : chrome_extra_parts_)
    chrome_extra_part->PostProfileInit(profile, is_initial_profile);

#if BUILDFLAG(IS_WIN)
  // Verify that the profile is not on a network share and if so prepare to show
  // notification to the user.
  if (NetworkProfileBubble::ShouldCheckNetworkProfile(profile)) {
    base::ThreadPool::PostTask(
        FROM_HERE, {base::MayBlock()},
        base::BindOnce(&NetworkProfileBubble::CheckNetworkProfile,
                       profile->GetPath()));
  }

#if BUILDFLAG(USE_BROWSER_SPELLCHECKER)
  // Create the spellcheck service. This will asynchronously retrieve the
  // Windows platform spellcheck dictionary language tags used to populate the
  // context menu for editable content.
  if (spellcheck::UseBrowserSpellChecker() &&
      profile->GetPrefs()->GetBoolean(spellcheck::prefs::kSpellCheckEnable) &&
      !base::FeatureList::IsEnabled(
          spellcheck::kWinDelaySpellcheckServiceInit)) {
    SpellcheckServiceFactory::GetForContext(profile);
  }
#endif
#endif  // BUILDFLAG(IS_WIN)

#if BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_CHROMEOS) || BUILDFLAG(IS_LINUX) || \
    BUILDFLAG(IS_MAC) || BUILDFLAG(IS_WIN)
  // Delete the media history database if it still exists.
  // TODO(crbug.com/40177301): Remove this.
  base::ThreadPool::PostTask(
      FROM_HERE,
      {base::MayBlock(), base::TaskPriority::BEST_EFFORT,
       base::TaskShutdownBehavior::SKIP_ON_SHUTDOWN},
      base::BindOnce(&DeleteMediaHistoryDatabase, profile->GetPath()));
#endif

#if !BUILDFLAG(IS_ANDROID)
  if (ShouldInstallSodaDuringPostProfileInit(
          *base::CommandLine::ForCurrentProcess(), profile)) {
    speech::SodaInstaller::GetInstance()->Init(profile->GetPrefs(),
                                               browser_process_->local_state());
  }
#endif

#if BUILDFLAG(ENABLE_RLZ) && !BUILDFLAG(IS_CHROMEOS)
  if (is_initial_profile) {
    // Init the RLZ library. This just binds the dll and schedules a task on the
    // file thread to be run sometime later. If this is the first run we record
    // the installation event.
    int ping_delay =
        profile->GetPrefs()->GetInteger(prefs::kRlzPingDelaySeconds);
    // Negative ping delay means to send ping immediately after a first search
    // is recorded.
    rlz::RLZTracker::SetRlzDelegate(
        std::make_unique<ChromeRLZTrackerDelegate>());
    rlz::RLZTracker::InitRlzDelayed(
        first_run::IsChromeFirstRun(), ping_delay < 0,
        base::Seconds(abs(ping_delay)),
        ChromeRLZTrackerDelegate::IsGoogleDefaultSearch(profile),
        ChromeRLZTrackerDelegate::IsGoogleHomepage(profile),
        ChromeRLZTrackerDelegate::IsGoogleInStartpages(profile));
  }
#endif

  language::LanguageUsageMetrics::RecordAcceptLanguages(
      profile->GetPrefs()->GetString(language::prefs::kAcceptLanguages));
  translate::TranslateMetricsLoggerImpl::LogApplicationStartMetrics(
      ChromeTranslateClient::CreateTranslatePrefs(profile->GetPrefs()));
// On ChromeOS results in a crash. https://crbug.com/1151558
#if !BUILDFLAG(IS_CHROMEOS)
  language::LanguageUsageMetrics::RecordPageLanguages(
      *UrlLanguageHistogramFactory::GetForBrowserContext(profile));
#endif

#if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_MAC) || BUILDFLAG(IS_WIN)
  if (headless::IsHeadlessMode()) {
    headless::ReportHeadlessActionMetrics();
  }
#endif
}

void ChromeBrowserMainParts::PreBrowserStart() {
  TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreBrowserStart");
  for (auto& chrome_extra_part : chrome_extra_parts_)
    chrome_extra_part->PreBrowserStart();

#if !BUILDFLAG(IS_ANDROID)
  // Start the tab manager here so that we give the most amount of time for the
  // other services to start up before we start adjusting the oom priority.
  g_browser_process->GetTabManager()->Start();

  if (base::FeatureList::IsEnabled(features::kReportPakFileIntegrity)) {
    CheckPakFileIntegrity();
  }
#endif

  // The RulesetService will make the filtering rules available to renderers
  // immediately after its construction, provided that the rules are already
  // available at no cost in an indexed format. This enables activating
  // subresource filtering, if needed, also for page loads on start-up.
  g_browser_process->subresource_filter_ruleset_service();
  // Also enable subresource filtering for fingerprinting protection.
  g_browser_process->fingerprinting_protection_ruleset_service();
}

void ChromeBrowserMainParts::PostBrowserStart() {
  TRACE_EVENT0("startup", "ChromeBrowserMainParts::PostBrowserStart");
  for (auto& chrome_extra_part : chrome_extra_parts_)
    chrome_extra_part->PostBrowserStart();

  browser_process_->browser_policy_connector()->OnBrowserStarted();

#if BUILDFLAG(ENABLE_PROCESS_SINGLETON)
  // Allow ProcessSingleton to process messages.
  // This is done here instead of just relying on the main message loop's start
  // to avoid rendezvous in RunLoops that may precede MainMessageLoopRun.
  ChromeProcessSingleton::GetInstance()->Unlock(base::BindRepeating(
      &ChromeBrowserMainParts::ProcessSingletonNotificationCallback));
#endif

  // Set up a task to delete old WebRTC log files for all profiles. Use a delay
  // to reduce the impact on startup time.
  content::GetUIThreadTaskRunner({})->PostDelayedTask(
      FROM_HERE,
      base::BindOnce(&WebRtcLogUtil::DeleteOldWebRtcLogFilesForAllProfiles),
      base::Minutes(1));

#if !BUILDFLAG(IS_ANDROID)
  if (base::FeatureList::IsEnabled(features::kWebUsb)) {
    web_usb_detector_ = std::make_unique<WebUsbDetector>();
    content::GetUIThreadTaskRunner({base::TaskPriority::BEST_EFFORT})
        ->PostTask(FROM_HERE,
                   base::BindOnce(&WebUsbDetector::Initialize,
                                  base::Unretained(web_usb_detector_.get())));
  }
#endif

  // At this point, StartupBrowserCreator::Start has run creating initial
  // browser windows and tabs, but no progress has been made in loading
  // content as the main message loop hasn't started processing tasks yet.
  // We setup to observe to the initial page load here to defer running
  // task posted via PostAfterStartupTask until its complete.
  AfterStartupTaskUtils::StartMonitoringStartup();
}

int ChromeBrowserMainParts::PreMainMessageLoopRunImpl() {
  TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreMainMessageLoopRunImpl");

  SCOPED_UMA_HISTOGRAM_LONG_TIMER("Startup.PreMainMessageLoopRunImplLongTime");

#if BUILDFLAG(IS_WIN)
  // Windows parental controls calls can be slow, so we do an early init here
  // that calculates this value off of the UI thread.
  InitializeWinParentalControls();
#endif

  // Now that the file thread has been started, start metrics.
  StartMetricsRecording();

  // Do any initializating in the browser process that requires all threads
  // running.
  browser_process_->PreMainMessageLoopRun();

#if BUILDFLAG(IS_WIN)
  // If the command line specifies 'uninstall' then we need to work here
  // unless we detect another chrome browser running.
  if (base::CommandLine::ForCurrentProcess()->HasSwitch(switches::kUninstall)) {
    return DoUninstallTasks(browser_util::IsBrowserAlreadyRunning());
  }

  if (base::CommandLine::ForCurrentProcess()->HasSwitch(switches::kHideIcons) ||
      base::CommandLine::ForCurrentProcess()->HasSwitch(switches::kShowIcons)) {
    return ChromeBrowserMainPartsWin::HandleIconsCommands(
        *base::CommandLine::ForCurrentProcess());
  }

  ui::SelectFileDialog::SetFactory(
      std::make_unique<ChromeSelectFileDialogFactory>());
#endif

  // In headless mode provide alternate SelectFileDialog factory overriding
  // any platform specific SelectFileDialog implementation that may have been
  // set.
#if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_MAC) || BUILDFLAG(IS_WIN)
  if (headless::IsHeadlessMode()) {
    headless::HeadlessSelectFileDialogFactory::SetUp();
  }
#endif

#if BUILDFLAG(CHROME_FOR_TESTING)
  if (!g_browser_process->local_state()->GetBoolean(
          prefs::kChromeForTestingAllowed)) {
    LOG(ERROR) << "Chrome for Testing is disallowed by the system admin.";
    return static_cast<int>(CHROME_RESULT_CODE_ACTION_DISALLOWED_BY_POLICY);
  }
#endif

  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
          switches::kMakeDefaultBrowser)) {
    bool is_managed = g_browser_process->local_state()->IsManagedPreference(
        prefs::kDefaultBrowserSettingEnabled);
    if (is_managed && !g_browser_process->local_state()->GetBoolean(
        prefs::kDefaultBrowserSettingEnabled)) {
      return static_cast<int>(CHROME_RESULT_CODE_ACTION_DISALLOWED_BY_POLICY);
    }

    return shell_integration::SetAsDefaultBrowser()
               ? static_cast<int>(content::RESULT_CODE_NORMAL_EXIT)
               : static_cast<int>(CHROME_RESULT_CODE_SHELL_INTEGRATION_FAILED);
  }

#if defined(USE_AURA)
  // Make sure aura::Env has been initialized.
  CHECK(aura::Env::GetInstance());
#endif

#if BUILDFLAG(IS_WIN)
  // We must call DoUpgradeTasks now that we own the browser singleton to
  // finish upgrade tasks (swap) and relaunch if necessary.
  if (upgrade_util::DoUpgradeTasks(*base::CommandLine::ForCurrentProcess()))
    return CHROME_RESULT_CODE_NORMAL_EXIT_UPGRADE_RELAUNCHED;
#endif

#if BUILDFLAG(ENABLE_DOWNGRADE_PROCESSING) && !BUILDFLAG(IS_ANDROID)
  // Begin relaunch processing immediately if User Data migration is required
  // to handle a version downgrade.
  if (downgrade_manager_.PrepareUserDataDirectoryForCurrentVersion(
          user_data_dir_)) {
    return CHROME_RESULT_CODE_DOWNGRADE_AND_RELAUNCH;
  }
  downgrade_manager_.UpdateLastVersion(user_data_dir_);
#endif

#if !BUILDFLAG(IS_CHROMEOS)
  // Initialize the chrome browser cloud management controller after
  // the browser process singleton is acquired to remove race conditions where
  // multiple browser processes start simultaneously.  The main
  // initialization of browser_policy_connector is performed inside
  // PreMainMessageLoopRun() so that policies can be applied as soon as
  // possible.
  //
  // Note that this protects against multiple browser process starts in
  // the same user data dir and not multiple starts across user data dirs.
  browser_process_->browser_policy_connector()->InitCloudManagementController(
      browser_process_->local_state(),
      browser_process_->system_network_context_manager()
          ->GetSharedURLLoaderFactory());
#endif

#if !BUILDFLAG(IS_ANDROID) && !BUILDFLAG(IS_CHROMEOS)
  // Wait for the chrome browser cloud management enrollment to finish.
  // If enrollment is not mandatory, this function returns immediately.
  // Abort the launch process if required enrollment fails.
  if (!browser_process_->browser_policy_connector()
           ->chrome_browser_cloud_management_controller()
           ->WaitUntilPolicyEnrollmentFinished()) {
    return CHROME_RESULT_CODE_CLOUD_POLICY_ENROLLMENT_FAILED;
  }
#endif

#if BUILDFLAG(IS_WIN)
  // Check if there is any machine level Chrome installed on the current
  // machine. If yes and the current Chrome process is user level, we do not
  // allow the user level Chrome to run. So we notify the user and uninstall
  // user level Chrome.
  // Note this check needs to happen here (after the process singleton was
  // obtained but before potentially creating the first run sentinel).
  if (ChromeBrowserMainPartsWin::CheckMachineLevelInstall())
    return CHROME_RESULT_CODE_MACHINE_LEVEL_INSTALL_EXISTS;
#endif

  // Desktop construction occurs here, (required before profile creation).
  PreProfileInit();

#if BUILDFLAG(ENABLE_NACL)
  // NaClBrowserDelegateImpl is accessed inside CreateInitialProfile().
  // So make sure to create it before that.
  nacl::NaClBrowser::SetDelegate(std::make_unique<NaClBrowserDelegateImpl>(
      browser_process_->profile_manager()));
#endif

  // This step is costly and is already measured in Startup.CreateFirstProfile
  // and more directly Profile.CreateAndInitializeProfile.
  StartupProfileInfo profile_info = CreateInitialProfile(
      user_data_dir_, *base::CommandLine::ForCurrentProcess());
  base::UmaHistogramEnumeration(
      "ProfilePicker.StartupMode.CreateInitialProfile", profile_info.mode);

  if (profile_info.mode == StartupProfileMode::kError)
    return content::RESULT_CODE_NORMAL_EXIT;

#if !BUILDFLAG(IS_ANDROID)
  // The first run sentinel must be created after the process singleton was
  // grabbed (where enabled) and no early return paths were otherwise hit above.
  first_run::CreateSentinelIfNeeded();
#endif

#if BUILDFLAG(ENABLE_BACKGROUND_MODE)
  // Autoload any profiles which are running background apps.
  // TODO(rlp): Do this on a separate thread. See http://crbug.com/99075.
  browser_process_->profile_manager()->AutoloadProfiles();
#endif
  // Post-profile init ---------------------------------------------------------

  TranslateService::Initialize();
  if (base::FeatureList::IsEnabled(features::kGeoLanguage) ||
      language::GetOverrideLanguageModel() ==
          language::OverrideLanguageModel::GEO) {
    language::GeoLanguageProvider::GetInstance()->StartUp(
        browser_process_->local_state());
  }

  // Needs to be done before PostProfileInit, since login manager on CrOS is
  // called inside PostProfileInit.
  content::WebUIControllerFactory::RegisterFactory(
      ChromeWebUIControllerFactory::GetInstance());
  RegisterChromeWebUIConfigs();
  RegisterChromeUntrustedWebUIConfigs();

#if BUILDFLAG(IS_ANDROID)
  page_info::SetPageInfoClient(new ChromePageInfoClient());
#endif

  // Needs to be done before PostProfileInit, to allow connecting DevTools
  // before WebUI for the CrOS login that can be called inside PostProfileInit
  g_browser_process->CreateDevToolsProtocolHandler();
  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
          ::switches::kAutoOpenDevToolsForTabs))
    g_browser_process->CreateDevToolsAutoOpener();

  // Needs to be done before PostProfileInit, since the SODA Installer setup is
  // called inside PostProfileInit and depends on it.
  if (!base::CommandLine::ForCurrentProcess()->HasSwitch(
          switches::kDisableComponentUpdate)) {
    component_updater::RegisterComponentsForUpdate();
  }

  // `profile` may be nullptr if the profile picker is shown.
  Profile* profile = profile_info.profile;
  // Call `PostProfileInit()`and set it up for profiles created later.
  profile_init_manager_ = std::make_unique<ProfileInitManager>(this, profile);

#if !BUILDFLAG(IS_ANDROID) && !BUILDFLAG(IS_CHROMEOS)
  // Execute first run specific code after the PrefService has been initialized
  // and preferences have been registered since some of the import code depends
  // on preferences.
  if (first_run::IsChromeFirstRun()) {
    // `profile` may be nullptr even on first run, for example when the
    // "BrowserSignin" policy is set to "Force". If so, skip the auto import.
    if (profile) {
      first_run::AutoImport(profile, master_prefs_->import_bookmarks_path);
    }

    // Note: This can pop-up the first run consent dialog on Linux & Mac.
    first_run::DoPostImportTasks(master_prefs_->make_chrome_default_for_user);

    // The first run dialog is modal, and spins a RunLoop, which could receive
    // a SIGTERM, and call chrome::AttemptExit(). Exit cleanly in that case.
    if (browser_shutdown::IsTryingToQuit())
      return content::RESULT_CODE_NORMAL_EXIT;
  }
#endif

#if BUILDFLAG(IS_WIN)
  // Registers Chrome with the Windows Restart Manager, which will restore the
  // Chrome session when the computer is restarted after a system update.
  // This could be run as late as WM_QUERYENDSESSION for system update reboots,
  // but should run on startup if extended to handle crashes/hangs/patches.
  // Also, better to run once here than once for each HWND's WM_QUERYENDSESSION.
  if (!base::CommandLine::ForCurrentProcess()->HasSwitch(
          switches::kBrowserTest)) {
    ChromeBrowserMainPartsWin::RegisterApplicationRestart(
        *base::CommandLine::ForCurrentProcess());
  }
#endif

  // Configure modules that need access to resources.
  net::NetModule::SetResourceProvider(ChromeNetResourceProvider);
  media::SetLocalizedStringProvider(ChromeMediaLocalizedStringProvider);

#if !BUILDFLAG(IS_ANDROID)
  // In unittest mode, this will do nothing.  In normal mode, this will create
  // the global IntranetRedirectDetector instance, which will promptly go to
  // sleep for seven seconds (to avoid slowing startup), and wake up afterwards
  // to see if it should do anything else.
  //
  // A simpler way of doing all this would be to have some function which could
  // give the time elapsed since startup, and simply have this object check that
  // when asked to initialize itself, but this doesn't seem to exist.
  //
  // This can't be created in the BrowserProcessImpl constructor because it
  // needs to read prefs that get set after that runs.
  browser_process_->intranet_redirect_detector();
#endif

#if BUILDFLAG(ENABLE_PDF)
  chrome_pdf::features::SetIsOopifPdfPolicyEnabled(
      g_browser_process->local_state()->GetBoolean(
          prefs::kPdfViewerOutOfProcessIframeEnabled));
#endif

#if BUILDFLAG(ENABLE_PRINT_PREVIEW) && !defined(OFFICIAL_BUILD)
  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
          switches::kDebugPrint)) {
    base::FilePath path =
        base::CommandLine::ForCurrentProcess()->GetSwitchValuePath(
            switches::kDebugPrint);
    if (!path.empty())
      printing::PrintedDocument::SetDebugDumpPath(path);
  }
#endif

#if BUILDFLAG(ENABLE_PRINTING)
  printing::InitializeProcessForPrinting();

#if BUILDFLAG(ENABLE_OOP_PRINTING)
  if (printing::ShouldEarlyStartPrintBackendService()) {
    printing::EarlyStartPrintBackendService();
  }
#endif
#endif  // BUILDFLAG(ENABLE_PRINTING)

  HandleTestParameters(*base::CommandLine::ForCurrentProcess());

  // This has to come before the first GetInstance() call. PreBrowserStart()
  // seems like a reasonable place to put this, except on Android,
  // OfflinePageInfoHandler::Register() below calls GetInstance().
  // TODO(thestig): See if the Android code below can be moved to later.
  sessions::ContentSerializedNavigationDriver::SetInstance(
      ChromeSerializedNavigationDriver::GetInstance());

#if BUILDFLAG(ENABLE_OFFLINE_PAGES)
  offline_pages::OfflinePageInfoHandler::Register();
#endif

#if BUILDFLAG(ENABLE_NACL)
  nacl::NaClProcessHost::EarlyStartup();
#endif

  PreBrowserStart();

  variations::VariationsService* variations_service =
      browser_process_->variations_service();
  variations_service->PerformPreMainMessageLoopStartup();

#if BUILDFLAG(IS_ANDROID)
  // The profile picker is never shown on Android.
  DCHECK_EQ(profile_info.mode, StartupProfileMode::kBrowserWindow);
  DCHECK(profile);
  // Just initialize the policy prefs service here. Variations seed fetching
  // will be initialized when the app enters foreground mode.
  variations_service->set_policy_pref_service(profile->GetPrefs());
#else
  // We are in regular browser boot sequence. Open initial tabs and enter the
  // main message loop.
  std::vector<Profile*> last_opened_profiles;
#if !BUILDFLAG(IS_CHROMEOS)
  // On ChromeOS multiple profiles doesn't apply, and will break if we load
  // them this early as the cryptohome hasn't yet been mounted (which happens
  // only once we log in). And if we're launching a web app, we don't want to
  // restore the last opened profiles.
  if (!base::CommandLine::ForCurrentProcess()->HasSwitch(switches::kAppId)) {
    last_opened_profiles =
        g_browser_process->profile_manager()->GetLastOpenedProfiles();
  }
#endif
  // This step is costly.
  if (browser_creator_->Start(*base::CommandLine::ForCurrentProcess(),
                              base::FilePath(), profile_info,
                              last_opened_profiles)) {
#if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_WIN)
    // Initialize autoupdate timer. Timer callback costs basically nothing
    // when browser is not in persistent mode, so it's OK to let it ride on
    // the main thread. This needs to be done here because we don't want
    // to start the timer when Chrome is run inside a test harness.
    browser_process_->StartAutoupdateTimer();
#endif

#if BUILDFLAG(IS_LINUX)
    // On Linux, the running exe will be updated if an upgrade becomes
    // available while the browser is running.  We need to save the last
    // modified time of the exe, so we can compare to determine if there is
    // an upgrade while the browser is kept alive by a persistent extension.
    upgrade_util::SaveLastModifiedTimeOfExe();
#endif

    // Record now as the last successful chrome start.
    if constexpr (kShouldRecordActiveUse) {
      GoogleUpdateSettings::SetLastRunTime();
    }

    // Create the RunLoop for MainMessageLoopRun() to use and transfer
    // ownership of the browser's lifetime to the BrowserProcess.
    DCHECK(!GetMainRunLoopInstance());
    GetMainRunLoopInstance() = std::make_unique<base::RunLoop>();
    browser_process_->SetQuitClosure(
        GetMainRunLoopInstance()->QuitWhenIdleClosure());
  }
  browser_creator_.reset();
#endif  // BUILDFLAG(IS_ANDROID)

  PostBrowserStart();

#if BUILDFLAG(ENABLE_DOWNGRADE_PROCESSING)
  // Clean up old user data directory, snapshots and disk cache directory.
  downgrade_manager_.DeleteMovedUserDataSoon(user_data_dir_);
#endif

  // This should be invoked as close as possible to the start of the browser's
  // main loop, but before the end of PreMainMessageLoopRun in order for
  // browser tests (which InterceptMainMessageLoopRun rather than
  // MainMessageLoopRun) to be able to see its side-effect.
  if (result_code_ <= 0)
    RecordBrowserStartupTime();

  return result_code_;
}

#if !BUILDFLAG(IS_ANDROID)
bool ChromeBrowserMainParts::ShouldInterceptMainMessageLoopRun() {
  // Some early return paths in PreMainMessageLoopRunImpl intentionally prevent
  // the main run loop from being created. Use this as a signal to indicate that
  // the main message loop shouldn't be run.
  return !!GetMainRunLoopInstance();
}
#endif

void ChromeBrowserMainParts::WillRunMainMessageLoop(
    std::unique_ptr<base::RunLoop>& run_loop) {
#if BUILDFLAG(IS_ANDROID)
  // Chrome on Android does not use default MessageLoop. It has its own
  // Android specific MessageLoop
  NOTREACHED();
#else
  DCHECK(base::CurrentUIThread::IsSet());

  run_loop = std::move(GetMainRunLoopInstance());

  // Trace the entry and exit of this main message loop. We don't use the
  // TRACE_EVENT_BEGIN0 macro because the tracing infrastructure doesn't expect
  // a synchronous event around the main loop of a thread.
  TRACE_EVENT_NESTABLE_ASYNC_BEGIN0(
      "toplevel", "ChromeBrowserMainParts::MainMessageLoopRun", this);
#endif
}

void ChromeBrowserMainParts::OnFirstIdle() {
  startup_metric_utils::GetBrowser().RecordBrowserMainLoopFirstIdle(
      base::TimeTicks::Now());
#if BUILDFLAG(IS_ANDROID)
  sharing::ShareHistory::CreateForProfile(
      ProfileManager::GetPrimaryUserProfile());
#endif

#if BUILDFLAG(IS_CHROMEOS)
  // If OneGroupPerRenderer feature is enabled, post a task to clean any left
  // over cgroups due to any unclean exits.
  if (base::FeatureList::IsEnabled(base::kOneGroupPerRenderer)) {
    base::ThreadPool::PostTask(
        FROM_HERE, {base::MayBlock(), base::TaskPriority::BEST_EFFORT},
        base::BindOnce(&base::Process::CleanUpStaleProcessStates));
  }
#endif
}

void ChromeBrowserMainParts::PostMainMessageLoopRun() {
  TRACE_EVENT_NESTABLE_ASYNC_END0(
      "toplevel", "ChromeBrowserMainParts::MainMessageLoopRun", this);
  TRACE_EVENT0("startup", "ChromeBrowserMainParts::PostMainMessageLoopRun");
#if BUILDFLAG(IS_ANDROID)
  // Chrome on Android does not use default MessageLoop. It has its own
  // Android specific MessageLoop
  NOTREACHED();
#else
  // Shutdown the UpgradeDetector here before `ChromeBrowserMainPartsAsh`
  // disconnects DBus services in its PostDestroyThreads.
  UpgradeDetector::GetInstance()->Shutdown();

  // Start watching hangs up to the end of the process.
  StartWatchingForProcessShutdownHangs();

  // Two different types of hang detection cannot attempt to upload crashes at
  // the same time or they would interfere with each other. Do not start the
  // ShutdownWatcher if the HangWatcher is already collecting crash.
  // TODO(crbug.com/40840897): Migrate away from ShutdownWatcher and its old
  // timing.
  if (!base::HangWatcher::IsCrashReportingEnabled()) {
    // Start watching for jank during shutdown. It gets disarmed when
    // |shutdown_watcher_| object is destructed.
    constexpr base::TimeDelta kShutdownHangDelay{base::Seconds(300)};
    shutdown_watcher_ = std::make_unique<ShutdownWatcherHelper>();
    shutdown_watcher_->Arm(kShutdownHangDelay);
  }

  web_usb_detector_.reset();

  for (auto& chrome_extra_part : chrome_extra_parts_)
    chrome_extra_part->PostMainMessageLoopRun();

  TranslateService::Shutdown();

#if BUILDFLAG(ENABLE_PROCESS_SINGLETON)
  ChromeProcessSingleton::GetInstance()->Cleanup();
#endif

  browser_process_->metrics_service()->Stop();

  // BrowserProcessImpl::StartTearDown() makes SyntheticTrialRegistry
  // unavailable. Since SyntheticTrialSyncer depends on SyntheticTrialRegistry,
  // destroy before the tear-down.
  synthetic_trial_syncer_.reset();

  restart_last_session_ = browser_shutdown::ShutdownPreThreadsStop();
  browser_process_->StartTearDown();
#endif  // BUILDFLAG(IS_ANDROID)
}

void ChromeBrowserMainParts::PostDestroyThreads() {
#if BUILDFLAG(IS_ANDROID)
  // On Android, there is no quit/exit. So the browser's main message loop will
  // not finish.
  NOTREACHED();
#else
  for (auto& chrome_extra_part : chrome_extra_parts_) {
    chrome_extra_part->PostDestroyThreads();
  }

  browser_shutdown::RestartMode restart_mode =
      browser_shutdown::RestartMode::kNoRestart;

  if (restart_last_session_) {
    restart_mode = browser_shutdown::RestartMode::kRestartLastSession;

#if BUILDFLAG(ENABLE_BACKGROUND_MODE)
    if (BackgroundModeManager::should_restart_in_background())
      restart_mode = browser_shutdown::RestartMode::kRestartInBackground;
#endif
  }

  browser_process_->PostDestroyThreads();

  // We need to do this call as late as possible, but due to modularity, this
  // may be the last point in Chrome. This would be more effective if done at a
  // higher level on the stack, so that it is impossible for an early return to
  // bypass this code. Perhaps we need a *final* hook that is called on all
  // paths from content/browser/browser_main.
  //
  // Since we use |browser_process_|'s local state for this call, it must be
  // done before |browser_process_| is released.
  metrics::Shutdown(browser_process_->local_state());

  profile_init_manager_.reset();

#if BUILDFLAG(IS_CHROMEOS)
  // These controllers make use of `browser_process_->local_state()`, so they
  // must be destroyed before `browser_process_`.
  // Shutting down in the reverse order of Initialize().
  ash::HWDataUsageController::Shutdown();
  arc::StabilityMetricsManager::Shutdown();
  ash::StatsReportingController::Shutdown();
  browser_process_->platform_part()->ShutdownCrosSettings();
#endif

#if BUILDFLAG(ENABLE_DOWNGRADE_PROCESSING)
  if (result_code_ == CHROME_RESULT_CODE_DOWNGRADE_AND_RELAUNCH) {
    // Process a pending User Data downgrade before restarting.
    downgrade_manager_.ProcessDowngrade(user_data_dir_);

    // It's impossible for there to also be a user-driven relaunch since the
    // browser never fully starts in this case.
    DCHECK(!restart_last_session_);
    restart_mode = browser_shutdown::RestartMode::kRestartThisSession;
  }
#endif

  // From this point, the BrowserProcess class is no longer alive.
  browser_process_.reset();

  browser_shutdown::ShutdownPostThreadsStop(restart_mode);

#if !BUILDFLAG(IS_CHROMEOS)
  master_prefs_.reset();
#endif

  device_event_log::Shutdown();
#endif  // BUILDFLAG(IS_ANDROID)
}

// Public members:

void ChromeBrowserMainParts::AddParts(
    std::unique_ptr<ChromeBrowserMainExtraParts> parts) {
  chrome_extra_parts_.push_back(std::move(parts));
}

#if !BUILDFLAG(IS_ANDROID)
// static
std::unique_ptr<base::RunLoop> ChromeBrowserMainParts::TakeRunLoopForTest() {
  DCHECK(GetMainRunLoopInstance());
  return std::move(GetMainRunLoopInstance());
}
#endif

#if BUILDFLAG(ENABLE_PROCESS_SINGLETON)
// static
bool ChromeBrowserMainParts::ProcessSingletonNotificationCallback(
    base::CommandLine command_line,
    const base::FilePath& current_directory) {
  // Drop the request if the browser process is already shutting down.
  // Note that we're going to post an async task below. Even if the browser
  // process isn't shutting down right now, it could be by the time the task
  // starts running. So, an additional check needs to happen when it starts.
  // But regardless of any future check, there is no reason to post the task
  // now if we know we're already shutting down.
  if (!g_browser_process || g_browser_process->IsShuttingDown()) {
    return false;
  }

  // Drop the request if this or the requesting process is running with
  // automation enabled to avoid hard to cope with startup races.
  if (command_line.HasSwitch(switches::kEnableAutomation) ||
      base::CommandLine::ForCurrentProcess()->HasSwitch(
          switches::kEnableAutomation)) {
    return false;
  }

  // Drop the request if headless mode is in effect or the request is from
  // a headless Chrome process.
#if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_MAC) || BUILDFLAG(IS_WIN)
  if (headless::IsHeadlessMode() ||
      command_line.HasSwitch(switches::kHeadless)) {
    return false;
  }
#endif

  // In order to handle this request on Windows, there is platform specific
  // code in browser_finder.cc that requires making outbound COM calls to
  // cross-apartment shell objects (via IVirtualDesktopManager). That is not
  // allowed within a SendMessage handler, which this function is a part of.
  // So, we post a task to asynchronously finish the command line processing.
  return base::SingleThreadTaskRunner::GetCurrentDefault()->PostTask(
      FROM_HERE, base::BindOnce(&ProcessSingletonNotificationCallbackImpl,
                                std::move(command_line), current_directory));
}
#endif  // BUILDFLAG(ENABLE_PROCESS_SINGLETON)