chromium/components/performance_manager/features.cc

// 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 "base/time/time.h"
#include "build/build_config.h"
#include "build/chromeos_buildflags.h"

namespace performance_manager::features {

BASE_FEATURE(…);

#if !BUILDFLAG(IS_ANDROID)
BASE_FEATURE(…);

BASE_FEATURE(…);

BASE_FEATURE(…);

// The variable was renamed to "MemorySaver" but the experiment name remains as
// "HighEfficiency" because it is already running (crbug.com/1493843).
BASE_FEATURE(…);

BASE_FEATURE(…);

const base::FeatureParam<base::TimeDelta>
    kPerformanceControlsBatterySurveyLookback{ … };

#if BUILDFLAG(IS_WIN)
BASE_FEATURE(kPrefetchVirtualMemoryPolicy,
             "PrefetchVirtualMemoryPolicy",
             base::FEATURE_DISABLED_BY_DEFAULT);
#endif

BASE_FEATURE(…);

BASE_FEATURE(…);

BASE_FEATURE(…);

bool ShouldUsePerformanceInterventionBackend() { … }

const base::FeatureParam<int> kInterventionDialogStringVersion{ … };

const base::FeatureParam<bool> kInterventionShowMixedProfileSuggestions{ … };

const base::FeatureParam<base::TimeDelta> kInterventionButtonTimeout{ … };

const base::FeatureParam<base::TimeDelta> kCPUTimeOverThreshold{ … };
const base::FeatureParam<base::TimeDelta> kCPUSampleFrequency{ … };

const base::FeatureParam<int> kCPUDegradedHealthPercentageThreshold{ … };
const base::FeatureParam<int> kCPUUnhealthyPercentageThreshold{ … };

const base::FeatureParam<int> kCPUMaxActionableTabs{ … };

const base::FeatureParam<int> kMinimumActionableTabCPUPercentage{ … };

const base::FeatureParam<base::TimeDelta> kMemoryTimeOverThreshold{ … };

const base::FeatureParam<int> kMemoryFreePercentThreshold{ … };
const base::FeatureParam<int> kMemoryFreeBytesThreshold{ … };

#if BUILDFLAG(IS_CHROMEOS)
BASE_FEATURE(kUnthrottledTabProcessReporting,
             "UnthrottledTabProcessReporting",
             base::FEATURE_DISABLED_BY_DEFAULT);
#endif  // BUILDFLAG(IS_CHROMEOS)

#endif

BASE_FEATURE(…);

const base::FeatureParam<bool> kInheritParentPriority{ … };

const base::FeatureParam<bool> kDownvoteAdFrames{ … };

BASE_FEATURE(…);

BASE_FEATURE(…);

BASE_FEATURE(…);

BASE_FEATURE(…);

const base::FeatureParam<base::TimeDelta> kDelayBeforeLogging{ … };

const base::FeatureParam<int> kThresholdChromeCPUPercent{ … };

BASE_FEATURE(…);

// Note: This param is associated with `kCPUMeasurementInFreezingPolicy` instead
// of `kFreezingOnBatterySaver`, to allow retrieving the value without
// activating the `kFreezingOnBatterySaver` feature.
const base::FeatureParam<double> kFreezingOnBatterySaverHighCPUProportion{ … };

BASE_FEATURE(…);

BASE_FEATURE(…);

BASE_FEATURE(…);

BASE_FEATURE(…);

}  // namespace performance_manager::features