Have content/ create and destroy its own threads.

chrome/browser/chrome_browser_main.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_CHROME_BROWSER_MAIN_H_
 #define CHROME_BROWSER_CHROME_BROWSER_MAIN_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/gtest_prod_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/metrics/field_trial.h"
 #include "base/tracked_objects.h"
 #include "chrome/browser/first_run/first_run.h"
 #include "chrome/browser/process_singleton.h"
+#include "chrome/browser/ui/browser_init.h"
 #include "content/public/browser/browser_main_parts.h"
+#include "content/public/browser/browser_thread.h"
 
 class BrowserInit;
 class BrowserProcessImpl;
 class FieldTrialSynchronizer;
 class HistogramSynchronizer;
 class MetricsService;
 class PrefService;
 class Profile;
 class ShutdownWatcherHelper;
 class TranslateManager;
 
 namespace chrome_browser {
 // For use by ShowMissingLocaleMessageBox.
 extern const char kMissingLocaleDataTitle[];
 extern const char kMissingLocaleDataMessage[];
 }
 
 namespace chrome_browser_metrics {
 class TrackingSynchronizer;
 }
 
 namespace content {
+class IOThreadDelegate;
 struct MainFunctionParams;
 }
 
 class ChromeBrowserMainParts : public content::BrowserMainParts {
  public:
   virtual ~ChromeBrowserMainParts();
 
   // Constructs metrics service and does related initialization, including
   // creation of field trials. Call only after labs have been converted to
   // switches.
   MetricsService* SetupMetricsAndFieldTrials(PrefService* local_state);
 
   const content::MainFunctionParams& parameters() const {
     return parameters_;
   }
   const CommandLine& parsed_command_line() const {
     return parsed_command_line_;
   }
 
  protected:
   explicit ChromeBrowserMainParts(
       const content::MainFunctionParams& parameters);
 
   // content::BrowserParts overrides
   virtual void PreEarlyInitialization() OVERRIDE;
   virtual void PostEarlyInitialization() OVERRIDE;
   virtual void ToolkitInitialized() OVERRIDE;
   virtual void PreMainMessageLoopStart() OVERRIDE;
   virtual void PostMainMessageLoopStart() OVERRIDE;
-  virtual void PreMainMessageLoopRun() OVERRIDE;
+  virtual content::IOThreadDelegate* PreMainMessageLoopRun() OVERRIDE;
+  virtual void PreMainMessageLoopRunThreadsCreated() OVERRIDE;
   virtual bool MainMessageLoopRun(int* result_code) OVERRIDE;
   virtual void PostMainMessageLoopRun() OVERRIDE;
+  virtual void PreStopThread(content::BrowserThread::ID identifier) OVERRIDE;
+  virtual void PostStopThread(content::BrowserThread::ID identifier) OVERRIDE;
+  virtual void FinalCleanup() OVERRIDE;
 
   // Displays a warning message that we can't find any locale data files.
   virtual void ShowMissingLocaleMessageBox() = 0;
 
  private:
   // Methods for |EarlyInitialization()| ---------------------------------------
 
   // A/B test for the maximum number of persistent connections per host.
   void ConnectionFieldTrial();
 
@@ skipping 27 matching lines @@
       const CommandLine& parsed_command_line,
       const PrefService* local_state);
 
   // Add an invocation of your field trial init function to this method.
   void SetupFieldTrials(bool metrics_recording_enabled,
                         bool proxy_policy_is_set);
 
   // Methods for Main Message Loop -------------------------------------------
 
   int PreMainMessageLoopRunImpl();
+  int PreMainMessageLoopRunThreadsCreatedImpl();
   void StartBrowserOrUITask();
 
   // Members initialized on construction ---------------------------------------
 
   const content::MainFunctionParams& parameters_;
   const CommandLine& parsed_command_line_;
   int result_code_;
 
   // Create ShutdownWatcherHelper object for watching jank during shutdown.
   // Please keep |shutdown_watcher| as the first object constructed, and hence
@@ skipping 20 matching lines @@
   scoped_ptr<FirstRun::MasterPrefs> master_prefs_;
   bool record_search_engine_;
   TranslateManager* translate_manager_;
   Profile* profile_;
   bool run_message_loop_;
   ProcessSingleton::NotifyResult notify_result_;
 
   // Initialized in SetupMetricsAndFieldTrials.
   scoped_refptr<FieldTrialSynchronizer> field_trial_synchronizer_;
 
+  // Members initialized in PreMainMessageLoopRun, needed in
+  // PreMainMessageLoopRunThreadsCreated.
+  bool is_first_run_;
+  bool first_run_ui_bypass_;
+  MetricsService* metrics_;
+  PrefService* local_state_;
+  FilePath user_data_dir_;
+
+  // Members needed across shutdown methods.
+  bool restart_last_session_;
+
   FRIEND_TEST(BrowserMainTest, WarmConnectionFieldTrial_WarmestSocket);
   FRIEND_TEST(BrowserMainTest, WarmConnectionFieldTrial_Random);
   FRIEND_TEST(BrowserMainTest, WarmConnectionFieldTrial_Invalid);
   DISALLOW_COPY_AND_ASSIGN(ChromeBrowserMainParts);
 };
 
 // Records the conditions that can prevent Breakpad from generating and
 // sending crash reports.  The presence of a Breakpad handler (after
 // attempting to initialize crash reporting) and the presence of a debugger
 // are registered with the UMA metrics service.
 void RecordBreakpadStatusUMA(MetricsService* metrics);
 
 // Displays a warning message if some minimum level of OS support is not
 // present on the current platform.
 void WarnAboutMinimumSystemRequirements();
 
 // Records the time from our process' startup to the present time in
 // the UMA histogram |metric_name|.
 void RecordBrowserStartupTime();
 
 // Records a time value to an UMA histogram in the context of the
 // PreReadExperiment field-trial. This also reports to the appropriate
 // sub-histogram (_PreRead(Enabled|Disabled)).
 void RecordPreReadExperimentTime(const char* name, base::TimeDelta time);
 
 #endif  // CHROME_BROWSER_CHROME_BROWSER_MAIN_H_