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diff --git a/chromium/content/browser/browser_main_loop.h b/chromium/content/browser/browser_main_loop.h
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+++ b/chromium/content/browser/browser_main_loop.h
@@ -0,0 +1,167 @@
+// Copyright (c) 2012 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 CONTENT_BROWSER_BROWSER_MAIN_LOOP_H_
+#define CONTENT_BROWSER_BROWSER_MAIN_LOOP_H_
+
+#include "base/basictypes.h"
+#include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
+#include "content/browser/browser_process_sub_thread.h"
+#include "content/public/browser/browser_main_runner.h"
+
+class CommandLine;
+
+namespace base {
+class HighResolutionTimerManager;
+class MessageLoop;
+class PowerMonitor;
+class SystemMonitor;
+namespace debug {
+class TraceMemoryController;
+}  // namespace debug
+}  // namespace base
+
+namespace media {
+class AudioManager;
+class MIDIManager;
+}  // namespace media
+
+namespace net {
+class NetworkChangeNotifier;
+}  // namespace net
+
+namespace content {
+class AudioMirroringManager;
+class BrowserMainParts;
+class BrowserOnlineStateObserver;
+class BrowserShutdownImpl;
+class BrowserThreadImpl;
+class MediaStreamManager;
+class ResourceDispatcherHostImpl;
+class SpeechRecognitionManagerImpl;
+class SystemMessageWindowWin;
+struct MainFunctionParams;
+
+#if defined(OS_LINUX)
+class DeviceMonitorLinux;
+#elif defined(OS_MACOSX)
+class DeviceMonitorMac;
+#endif
+
+// Implements the main browser loop stages called from BrowserMainRunner.
+// See comments in browser_main_parts.h for additional info.
+class CONTENT_EXPORT BrowserMainLoop {
+ public:
+  // Returns the current instance. This is used to get access to the getters
+  // that return objects which are owned by this class.
+  static BrowserMainLoop* GetInstance();
+
+  explicit BrowserMainLoop(const MainFunctionParams& parameters);
+  virtual ~BrowserMainLoop();
+
+  void Init();
+
+  void EarlyInitialization();
+  void InitializeToolkit();
+  void MainMessageLoopStart();
+
+  // Create the tasks we need to complete startup.
+  void CreateStartupTasks();
+
+  // Perform the default message loop run logic.
+  void RunMainMessageLoopParts();
+
+  // Performs the shutdown sequence, starting with PostMainMessageLoopRun
+  // through stopping threads to PostDestroyThreads.
+  void ShutdownThreadsAndCleanUp();
+
+  int GetResultCode() const { return result_code_; }
+
+  media::AudioManager* audio_manager() const { return audio_manager_.get(); }
+  AudioMirroringManager* audio_mirroring_manager() const {
+    return audio_mirroring_manager_.get();
+  }
+  MediaStreamManager* media_stream_manager() const {
+    return media_stream_manager_.get();
+  }
+  media::MIDIManager* midi_manager() const { return midi_manager_.get(); }
+  base::Thread* indexed_db_thread() const { return indexed_db_thread_.get(); }
+
+ private:
+  class MemoryObserver;
+  // For ShutdownThreadsAndCleanUp.
+  friend class BrowserShutdownImpl;
+
+  void InitializeMainThread();
+
+  // Called just before creating the threads
+  int PreCreateThreads();
+
+  // Create all secondary threads.
+  int CreateThreads();
+
+  // Called right after the browser threads have been started.
+  int BrowserThreadsStarted();
+
+  int PreMainMessageLoopRun();
+
+  void MainMessageLoopRun();
+
+  // Members initialized on construction ---------------------------------------
+  const MainFunctionParams& parameters_;
+  const CommandLine& parsed_command_line_;
+  int result_code_;
+  // True if the non-UI threads were created.
+  bool created_threads_;
+
+  // Members initialized in |MainMessageLoopStart()| ---------------------------
+  scoped_ptr<base::MessageLoop> main_message_loop_;
+  scoped_ptr<base::SystemMonitor> system_monitor_;
+  scoped_ptr<base::PowerMonitor> power_monitor_;
+  scoped_ptr<base::HighResolutionTimerManager> hi_res_timer_manager_;
+  scoped_ptr<net::NetworkChangeNotifier> network_change_notifier_;
+  scoped_ptr<media::AudioManager> audio_manager_;
+  scoped_ptr<media::MIDIManager> midi_manager_;
+  scoped_ptr<AudioMirroringManager> audio_mirroring_manager_;
+  scoped_ptr<MediaStreamManager> media_stream_manager_;
+  // Per-process listener for online state changes.
+  scoped_ptr<BrowserOnlineStateObserver> online_state_observer_;
+#if defined(OS_WIN)
+  scoped_ptr<SystemMessageWindowWin> system_message_window_;
+#elif defined(OS_LINUX)
+  scoped_ptr<DeviceMonitorLinux> device_monitor_linux_;
+#elif defined(OS_MACOSX) && !defined(OS_IOS)
+  scoped_ptr<DeviceMonitorMac> device_monitor_mac_;
+#endif
+
+  // Destroy parts_ before main_message_loop_ (required) and before other
+  // classes constructed in content (but after main_thread_).
+  scoped_ptr<BrowserMainParts> parts_;
+
+  // Members initialized in |InitializeMainThread()| ---------------------------
+  // This must get destroyed before other threads that are created in parts_.
+  scoped_ptr<BrowserThreadImpl> main_thread_;
+
+  // Members initialized in |BrowserThreadsStarted()| --------------------------
+  scoped_ptr<ResourceDispatcherHostImpl> resource_dispatcher_host_;
+  scoped_ptr<SpeechRecognitionManagerImpl> speech_recognition_manager_;
+
+  // Members initialized in |RunMainMessageLoopParts()| ------------------------
+  scoped_ptr<BrowserProcessSubThread> db_thread_;
+  scoped_ptr<BrowserProcessSubThread> file_user_blocking_thread_;
+  scoped_ptr<BrowserProcessSubThread> file_thread_;
+  scoped_ptr<BrowserProcessSubThread> process_launcher_thread_;
+  scoped_ptr<BrowserProcessSubThread> cache_thread_;
+  scoped_ptr<BrowserProcessSubThread> io_thread_;
+  scoped_ptr<base::Thread> indexed_db_thread_;
+  scoped_ptr<MemoryObserver> memory_observer_;
+  scoped_ptr<base::debug::TraceMemoryController> trace_memory_controller_;
+
+  DISALLOW_COPY_AND_ASSIGN(BrowserMainLoop);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_BROWSER_MAIN_LOOP_H_