chrome_browser_field_trials.cc | Explore in Territory

// 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_field_trials.h"

#include <string>

#include "base/command_line.h"
#include "base/feature_list.h"
#include "base/files/file_util.h"
#include "base/metrics/field_trial.h"
#include "base/path_service.h"
#include "base/strings/string_util.h"
#include "base/time/time.h"
#include "build/build_config.h"
#include "build/chromeos_buildflags.h"
#include "chrome/browser/metrics/chrome_browser_sampling_trials.h"
#include "chrome/browser/metrics/chrome_metrics_service_accessor.h"
#include "chrome/browser/metrics/chrome_metrics_service_client.h"
#include "chrome/common/chrome_paths.h"
#include "chrome/common/chrome_switches.h"
#include "components/metrics/metrics_pref_names.h"
#include "components/metrics/persistent_histograms.h"
#include "components/version_info/version_info.h"

#if BUILDFLAG(IS_ANDROID)
#include "base/android/build_info.h"
#include "base/android/bundle_utils.h"
#include "base/task/thread_pool/environment_config.h"
#include "chrome/browser/android/flags/chrome_cached_flags.h"
#include "chrome/browser/flags/android/chrome_feature_list.h"
#include "chrome/common/chrome_features.h"
#endif

#if BUILDFLAG(IS_CHROMEOS_ASH)
#include "chrome/common/channel_info.h"
#include "chromeos/ash/services/multidevice_setup/public/cpp/first_run_field_trial.h"
#endif

#if BUILDFLAG(IS_CHROMEOS_LACROS)
// GN doesn't understand conditional includes, so we need nogncheck here.
// See crbug.com/1125897.
#include "chromeos/startup/startup.h"  // nogncheck
#endif

#if !BUILDFLAG(IS_ANDROID) && !BUILDFLAG(IS_CHROMEOS)
#include "chrome/browser/ui/startup/default_browser_prompt/default_browser_prompt_trial.h"
#endif

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

ChromeBrowserFieldTrials::ChromeBrowserFieldTrials(PrefService* local_state)
    : … { … }

ChromeBrowserFieldTrials::~ChromeBrowserFieldTrials() = default;

void ChromeBrowserFieldTrials::OnVariationsSetupComplete() { … }

void ChromeBrowserFieldTrials::SetUpClientSideFieldTrials(
    bool has_seed,
    const variations::EntropyProviders& entropy_providers,
    base::FeatureList* feature_list) { … }

void ChromeBrowserFieldTrials::RegisterSyntheticTrials() { … }

#if BUILDFLAG(IS_LINUX)
// On Linux/Desktop platform variants, such as ozone/wayland, some features
// might need to be disabled as per OzonePlatform's runtime properties.
// OzonePlatform selection and initialization, in turn, depend on Chrome flags
// processing, namely 'ozone-platform-hint', so do it here.
//
// TODO(nickdiego): Move it back to ChromeMainDelegate::PostEarlyInitialization
// once ozone-platform-hint flag is dropped.
void ChromeBrowserFieldTrials::RegisterFeatureOverrides(
    base::FeatureList* feature_list) { … }
#endif  // BUILDFLAG(IS_LINUX)
chromium/chrome/browser/chrome_browser_field_trials.cc
