chrome/browser/chrome_browser_main.h

   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 #ifndef CHROME_BROWSER_CHROME_BROWSER_MAIN_H_
   6 #define CHROME_BROWSER_CHROME_BROWSER_MAIN_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "base/metrics/field_trial.h"
  11 #include "base/tracked_objects.h"
  12 #include "chrome/browser/chrome_browser_field_trials.h"
  13 #include "chrome/browser/chrome_process_singleton.h"
  14 #include "chrome/browser/first_run/first_run.h"
  15 #include "chrome/browser/process_singleton.h"
  16 #include "chrome/browser/task_profiler/auto_tracking.h"
  17 #include "chrome/browser/ui/startup/startup_browser_creator.h"
  18 #include "content/public/browser/browser_main_parts.h"
  19 #include "content/public/common/main_function_params.h"
  20
  21 class BrowserProcessImpl;
  22 class ChromeBrowserMainExtraParts;
  23 class FieldTrialSynchronizer;
  24 class MetricsService;
  25 class PrefService;
  26 class ProcessPowerCollector;
  27 class Profile;
  28 class StartupBrowserCreator;
  29 class StartupTimeBomb;
  30 class ShutdownWatcherHelper;
  31 class ThreeDAPIObserver;
  32
  33 namespace chrome_browser {
  34 // For use by ShowMissingLocaleMessageBox.
  35 #if defined(OS_WIN)
  36 extern const char kMissingLocaleDataTitle[];
  37 #endif
  38
  39 #if defined(OS_WIN)
  40 extern const char kMissingLocaleDataMessage[];
  41 #endif
  42 }
  43
  44 namespace metrics {
  45 class TrackingSynchronizer;
  46 }
  47
  48 class ChromeBrowserMainParts : public content::BrowserMainParts {
  49  public:
  50   ~ChromeBrowserMainParts() override;
  51
  52   // Add additional ChromeBrowserMainExtraParts.
  53   virtual void AddParts(ChromeBrowserMainExtraParts* parts);
  54
  55  protected:
  56   explicit ChromeBrowserMainParts(
  57       const content::MainFunctionParams& parameters);
  58
  59   // content::BrowserMainParts overrides.
  60   // These are called in-order by content::BrowserMainLoop.
  61   // Each stage calls the same stages in any ChromeBrowserMainExtraParts added
  62   // with AddParts() from ChromeContentBrowserClient::CreateBrowserMainParts.
  63   void PreEarlyInitialization() override;
  64   void PostEarlyInitialization() override;
  65   void ToolkitInitialized() override;
  66   void PreMainMessageLoopStart() override;
  67   void PostMainMessageLoopStart() override;
  68   int PreCreateThreads() override;
  69   void PreMainMessageLoopRun() override;
  70   bool MainMessageLoopRun(int* result_code) override;
  71   void PostMainMessageLoopRun() override;
  72   void PostDestroyThreads() override;
  73
  74   // Additional stages for ChromeBrowserMainExtraParts. These stages are called
  75   // in order from PreMainMessageLoopRun(). See implementation for details.
  76   virtual void PreProfileInit();
  77   virtual void PostProfileInit();
  78   virtual void PreBrowserStart();
  79   virtual void PostBrowserStart();
  80
  81   // Displays a warning message that we can't find any locale data files.
  82   virtual void ShowMissingLocaleMessageBox() = 0;
  83
  84   const content::MainFunctionParams& parameters() const {
  85     return parameters_;
  86   }
  87   const base::CommandLine& parsed_command_line() const {
  88     return parsed_command_line_;
  89   }
  90   const base::FilePath& user_data_dir() const {
  91     return user_data_dir_;
  92   }
  93
  94   Profile* profile() { return profile_; }
  95
  96   const PrefService* local_state() const { return local_state_; }
  97
  98  private:
  99   // Methods for |SetupMetricsAndFieldTrials()| --------------------------------
 100
 101   // Constructs metrics service and does related initialization, including
 102   // creation of field trials. Call only after labs have been converted to
 103   // switches.
 104   void SetupMetricsAndFieldTrials();
 105
 106   // Starts recording of metrics. This can only be called after we have a file
 107   // thread.
 108   void StartMetricsRecording();
 109
 110   // Record time from process startup to present time in an UMA histogram.
 111   void RecordBrowserStartupTime();
 112
 113   // Records a time value to an UMA histogram in the context of the
 114   // PreReadExperiment field-trial. This also reports to the appropriate
 115   // sub-histogram (_PreRead(Enabled|Disabled)).
 116   void RecordPreReadExperimentTime(const char* name, base::TimeDelta time);
 117
 118   // Methods for Main Message Loop -------------------------------------------
 119
 120   int PreCreateThreadsImpl();
 121   int PreMainMessageLoopRunImpl();
 122
 123   // Members initialized on construction ---------------------------------------
 124
 125   const content::MainFunctionParams parameters_;
 126   const base::CommandLine& parsed_command_line_;
 127   int result_code_;
 128
 129   // Create StartupTimeBomb object for watching jank during startup.
 130   scoped_ptr<StartupTimeBomb> startup_watcher_;
 131
 132   // Create ShutdownWatcherHelper object for watching jank during shutdown.
 133   // Please keep |shutdown_watcher| as the first object constructed, and hence
 134   // it is destroyed last.
 135   scoped_ptr<ShutdownWatcherHelper> shutdown_watcher_;
 136
 137   // Creating this object starts tracking the creation and deletion of Task
 138   // instance. This MUST be done before main_message_loop, so that it is
 139   // destroyed after the main_message_loop.
 140   task_profiler::AutoTracking tracking_objects_;
 141
 142   // Statistical testing infrastructure for the entire browser. NULL until
 143   // SetupMetricsAndFieldTrials is called.
 144   scoped_ptr<base::FieldTrialList> field_trial_list_;
 145
 146   ChromeBrowserFieldTrials browser_field_trials_;
 147
 148 #if !defined(OS_ANDROID) && !defined(OS_IOS)
 149   // A monitor for attributing power consumption to origins.
 150   scoped_ptr<ProcessPowerCollector> process_power_collector_;
 151 #endif
 152
 153   // Vector of additional ChromeBrowserMainExtraParts.
 154   // Parts are deleted in the inverse order they are added.
 155   std::vector<ChromeBrowserMainExtraParts*> chrome_extra_parts_;
 156
 157   // Members initialized after / released before main_message_loop_ ------------
 158
 159   scoped_ptr<BrowserProcessImpl> browser_process_;
 160   scoped_refptr<metrics::TrackingSynchronizer> tracking_synchronizer_;
 161 #if !defined(OS_ANDROID)
 162   // Browser creation happens on the Java side in Android.
 163   scoped_ptr<StartupBrowserCreator> browser_creator_;
 164
 165   // Android doesn't support multiple browser processes, so it doesn't implement
 166   // ProcessSingleton.
 167   scoped_ptr<ChromeProcessSingleton> process_singleton_;
 168
 169   // Android's first run is done in Java instead of native.
 170   scoped_ptr<first_run::MasterPrefs> master_prefs_;
 171 #endif
 172   Profile* profile_;
 173   bool run_message_loop_;
 174   ProcessSingleton::NotifyResult notify_result_;
 175   scoped_ptr<ThreeDAPIObserver> three_d_observer_;
 176
 177   // Initialized in SetupMetricsAndFieldTrials.
 178   scoped_refptr<FieldTrialSynchronizer> field_trial_synchronizer_;
 179
 180   // Members initialized in PreMainMessageLoopRun, needed in
 181   // PreMainMessageLoopRunThreadsCreated.
 182   PrefService* local_state_;
 183   base::FilePath user_data_dir_;
 184
 185   // Members needed across shutdown methods.
 186   bool restart_last_session_;
 187
 188   DISALLOW_COPY_AND_ASSIGN(ChromeBrowserMainParts);
 189 };
 190
 191 #endif  // CHROME_BROWSER_CHROME_BROWSER_MAIN_H_