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// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/preloading/prefetch/prefetch_features.h"
#include "content/public/browser/content_browser_client.h"
#include "content/public/browser/browser_context.h"
#include "content/public/common/content_client.h"
#include "base/feature_list.h"
namespace features {
BASE_FEATURE(kPrefetchUseContentRefactor,
"PrefetchUseContentRefactor",
base::FEATURE_ENABLED_BY_DEFAULT);
BASE_FEATURE(kPrefetchReusable,
"PrefetchReusable",
base::FEATURE_ENABLED_BY_DEFAULT);
// 4MiB, 2**20 * 4.
const base::FeatureParam<int> kPrefetchReusableBodySizeLimit{
&kPrefetchReusable, "prefetch_reusable_body_size_limit", 4194304};
BASE_FEATURE(kPrefetchNIKScope,
"PrefetchNIKScope",
base::FEATURE_DISABLED_BY_DEFAULT);
BASE_FEATURE(kPrefetchClientHints,
"PrefetchClientHints",
base::FEATURE_ENABLED_BY_DEFAULT);
constexpr base::FeatureParam<PrefetchClientHintsCrossSiteBehavior>::Option
kPrefetchClientHintsCrossSiteBehaviorOptions[] = {
{PrefetchClientHintsCrossSiteBehavior::kNone, "none"},
{PrefetchClientHintsCrossSiteBehavior::kLowEntropy, "low_entropy"},
{PrefetchClientHintsCrossSiteBehavior::kAll, "all"},
};
const base::FeatureParam<PrefetchClientHintsCrossSiteBehavior>
kPrefetchClientHintsCrossSiteBehavior{
&kPrefetchClientHints, "cross_site_behavior",
PrefetchClientHintsCrossSiteBehavior::kLowEntropy,
&kPrefetchClientHintsCrossSiteBehaviorOptions};
BASE_FEATURE(kPrefetchStateContaminationMitigation,
"PrefetchStateContaminationMitigation",
base::FEATURE_ENABLED_BY_DEFAULT);
const base::FeatureParam<bool>
kPrefetchStateContaminationSwapsBrowsingContextGroup{
&kPrefetchStateContaminationMitigation, "swaps_bcg", true};
BASE_FEATURE(kPrefetchProxy, "PrefetchProxy", base::FEATURE_ENABLED_BY_DEFAULT);
BASE_FEATURE(kPrefetchCookieIndices,
"PrefetchCookieIndices",
base::FEATURE_DISABLED_BY_DEFAULT);
BASE_FEATURE(kPrefetchNewLimits,
"PrefetchNewLimits",
base::FEATURE_ENABLED_BY_DEFAULT);
BASE_FEATURE(kPrefetchServiceWorkerNoFetchHandlerFix,
"PrefetchServiceWorkerNoFetchHandlerFix",
base::FEATURE_DISABLED_BY_DEFAULT);
BASE_FEATURE(kPrefetchNetworkPriorityForEmbedders,
"PrefetchNetworkPriorityForEmbedders",
base::FEATURE_ENABLED_BY_DEFAULT);
BASE_FEATURE(kPrefetchBumpNetworkPriorityAfterBeingServed,
"PrefetchBumpNetworkPriorityAfterBeingServed",
base::FEATURE_ENABLED_BY_DEFAULT);
BASE_FEATURE(kPrefetchServiceWorker,
"PrefetchServiceWorker",
base::FEATURE_DISABLED_BY_DEFAULT);
bool IsPrefetchServiceWorkerEnabled(content::BrowserContext* browser_context) {
return base::FeatureList::IsEnabled(kPrefetchServiceWorker) &&
content::GetContentClient()->browser()->IsPrefetchWithServiceWorkerAllowed(
browser_context);
}
BASE_FEATURE(kPrefetchBrowsingDataRemoval,
"PrefetchBrowsingDataRemoval",
base::FEATURE_ENABLED_BY_DEFAULT);
BASE_FEATURE(kPrefetchScheduler,
"PrefetchScheduler",
base::FEATURE_DISABLED_BY_DEFAULT);
const base::FeatureParam<bool> kPrefetchSchedulerProgressSyncBestEffort{
&kPrefetchScheduler, "kPrefetchSchedulerProgressSyncBestEffort", true};
BASE_FEATURE(kPrefetchSchedulerTesting,
"PrefetchSchedulerTesting",
base::FEATURE_DISABLED_BY_DEFAULT);
const base::FeatureParam<size_t>
kPrefetchSchedulerTestingActiveSetSizeLimitForBase{
&kPrefetchSchedulerTesting,
"kPrefetchSchedulerTestingActiveSetSizeLimitForBase", 1};
const base::FeatureParam<size_t>
kPrefetchSchedulerTestingActiveSetSizeLimitForBurst{
&kPrefetchSchedulerTesting,
"kPrefetchSchedulerTestingActiveSetSizeLimitForBurst", 1};
BASE_FEATURE(kPrefetchQueueingPartialFixWithoutScheduler,
"PrefetchQueueingPartialFixWithoutScheduler",
base::FEATURE_ENABLED_BY_DEFAULT);
} // namespace features
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