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
|
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_UI_UMA_BROWSING_ACTIVITY_OBSERVER_H_
#define CHROME_BROWSER_UI_UMA_BROWSING_ACTIVITY_OBSERVER_H_
#include "content/public/browser/notification_registrar.h"
#include "content/public/browser/notification_observer.h"
namespace chrome {
// This object is instantiated when the first Browser object is added to the
// list and delete when the last one is removed. It watches for loads and
// creates histograms of some global object counts.
class UMABrowsingActivityObserver : public content::NotificationObserver {
public:
static void Init();
private:
UMABrowsingActivityObserver();
~UMABrowsingActivityObserver() override;
// content::NotificationObserver implementation.
void Observe(int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) override;
// Counts the number of active RenderProcessHosts and logs them.
void LogRenderProcessHostCount() const;
// Counts the number of tabs in each browser window and logs them. This is
// different than the number of WebContents objects since WebContents objects
// can be used for popups and in dialog boxes. We're just counting toplevel
// tabs here.
void LogBrowserTabCount() const;
content::NotificationRegistrar registrar_;
DISALLOW_COPY_AND_ASSIGN(UMABrowsingActivityObserver);
};
} // namespace chrome
#endif // CHROME_BROWSER_UI_UMA_BROWSING_ACTIVITY_OBSERVER_H_
|
