chrome/browser/chrome_browser_field_trials.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/chrome_browser_field_trials.h"
   6
   7 #include <string>
   8
   9 #include "base/command_line.h"
  10 #include "base/metrics/field_trial.h"
  11 #include "base/prefs/pref_service.h"
  12 #include "base/strings/string_util.h"
  13 #include "base/time/time.h"
  14 #include "chrome/common/chrome_switches.h"
  15 #include "chrome/common/chrome_version_info.h"
  16 #include "chrome/common/variations/uniformity_field_trials.h"
  17 #include "components/metrics/metrics_pref_names.h"
  18 #include "components/omnibox/omnibox_field_trial.h"
  19
  20 #if defined(OS_ANDROID) || defined(OS_IOS)
  21 #include "chrome/browser/chrome_browser_field_trials_mobile.h"
  22 #else
  23 #include "chrome/browser/chrome_browser_field_trials_desktop.h"
  24 #endif
  25
  26 ChromeBrowserFieldTrials::ChromeBrowserFieldTrials(
  27     const CommandLine& parsed_command_line)
  28     : parsed_command_line_(parsed_command_line) {
  29 }
  30
  31 ChromeBrowserFieldTrials::~ChromeBrowserFieldTrials() {
  32 }
  33
  34 void ChromeBrowserFieldTrials::SetupFieldTrials(const base::Time& install_time,
  35                                                 PrefService* local_state) {
  36   DCHECK(!install_time.is_null());
  37
  38   // Field trials that are shared by all platforms.
  39   chrome_variations::SetupUniformityFieldTrials(install_time);
  40   InstantiateDynamicTrials();
  41
  42 #if defined(OS_ANDROID) || defined(OS_IOS)
  43   chrome::SetupMobileFieldTrials(parsed_command_line_);
  44 #else
  45   chrome::SetupDesktopFieldTrials(
  46       parsed_command_line_, local_state);
  47 #endif
  48 }
  49
  50 void ChromeBrowserFieldTrials::InstantiateDynamicTrials() {
  51   // The following trials are used from renderer process.
  52   // Mark here so they will be sync-ed.
  53   base::FieldTrialList::FindValue("CLD1VsCLD2");
  54   base::FieldTrialList::FindValue("MouseEventPreconnect");
  55   base::FieldTrialList::FindValue("UnauthorizedPluginInfoBar");
  56   base::FieldTrialList::FindValue("DisplayList2dCanvas");
  57   base::FieldTrialList::FindValue("V8ScriptStreaming");
  58   // Activate the autocomplete dynamic field trials.
  59   OmniboxFieldTrial::ActivateDynamicTrials();
  60 }