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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// This header contains field trial and variations definitions for policies,
// mechanisms and features in the performance_manager component.
#include "components/performance_manager/public/features.h"
#include "base/feature_list.h"
#include "base/metrics/field_trial_params.h"
#include "build/build_config.h"
#include "build/chromeos_buildflags.h"
namespace performance_manager::features {
BASE_FEATURE(kRunOnMainThread,
"RunOnMainThread",
base::FEATURE_DISABLED_BY_DEFAULT);
#if !BUILDFLAG(IS_ANDROID)
BASE_FEATURE(kBackgroundTabLoadingFromPerformanceManager,
"BackgroundTabLoadingFromPerformanceManager",
base::FEATURE_DISABLED_BY_DEFAULT);
BASE_FEATURE(kHighEfficiencyModeAvailable,
"HighEfficiencyModeAvailable",
base::FEATURE_DISABLED_BY_DEFAULT);
BASE_FEATURE(kBatterySaverModeAvailable,
"BatterySaverModeAvailable",
base::FEATURE_DISABLED_BY_DEFAULT);
const base::FeatureParam<base::TimeDelta> kHighEfficiencyModeTimeBeforeDiscard{
&kHighEfficiencyModeAvailable, "time_before_discard", base::Hours(2)};
const base::FeatureParam<bool> kHighEfficiencyModeDefaultState{
&kHighEfficiencyModeAvailable, "default_state", false};
// 10 tabs is the 70th percentile of tab counts based on UMA data.
const base::FeatureParam<int> kHighEfficiencyModePromoTabCountThreshold{
&kHighEfficiencyModeAvailable,
"tab_count_threshold",
10,
};
const base::FeatureParam<int> kHighEfficiencyModePromoMemoryPercentThreshold{
&kHighEfficiencyModeAvailable,
"memory_percent_threshold",
70,
};
// On ChromeOS, the adjustment generally seems to be around 3%, sometimes 2%. We
// choose 3% because it gets us close enough, or overestimates (which is better
// than underestimating in this instance).
const base::FeatureParam<int>
kBatterySaverModeThresholdAdjustmentForDisplayLevel {
&kBatterySaverModeAvailable, "low_battery_threshold_adjustment",
#if BUILDFLAG(IS_CHROMEOS_ASH)
3,
#else
0,
#endif // BUILDFLAG(IS_CHROMEOS_ASH)
};
#endif
BASE_FEATURE(kBFCachePerformanceManagerPolicy,
"BFCachePerformanceManagerPolicy",
base::FEATURE_DISABLED_BY_DEFAULT);
BASE_FEATURE(kUrgentPageDiscarding,
"UrgentPageDiscarding",
base::FEATURE_ENABLED_BY_DEFAULT);
BASE_FEATURE(kPageTimelineMonitor,
"PageTimelineMonitor",
base::FEATURE_DISABLED_BY_DEFAULT);
const base::FeatureParam<base::TimeDelta> kPageTimelineStateIntervalTime{
&kPageTimelineMonitor, "time_between_collect_slice", base::Minutes(5)};
} // namespace performance_manager::features
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