Switch Speech Recognition to asynchronous callback-based AudioManager interactions.

content/browser/browser_main_loop.h

 // 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 <memory>
 
 #include "base/files/file_path.h"
@@ skipping 22 matching lines @@
 namespace trace_event {
 class TraceEventSystemStatsMonitor;
 }  // namespace trace_event
 }  // namespace base
 
 namespace discardable_memory {
 class DiscardableSharedMemoryManager;
 }
 
 namespace media {
+class AudioSystem;
 #if defined(OS_WIN)
 class SystemMessageWindowWin;
 #elif defined(OS_LINUX) && defined(USE_UDEV)
 class DeviceMonitorLinux;
 #endif
 class UserInputMonitor;
 #if defined(OS_MACOSX)
 class DeviceMonitorMac;
 #endif
 }  // namespace media
@@ skipping 77 matching lines @@
   // 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(); }
+  media::AudioSystem* audio_system() const { return audio_system_.get(); }
   MediaStreamManager* media_stream_manager() const {
     return media_stream_manager_.get();
   }
   media::UserInputMonitor* user_input_monitor() const {
     return user_input_monitor_.get();
   }
   discardable_memory::DiscardableSharedMemoryManager*
   discardable_shared_memory_manager() const {
     return discardable_shared_memory_manager_.get();
   }
@@ skipping 138 matching lines @@
   // Members initialized in |BrowserThreadsStarted()| --------------------------
   std::unique_ptr<base::Thread> indexed_db_thread_;
   std::unique_ptr<ServiceManagerContext> service_manager_context_;
   std::unique_ptr<mojo::edk::ScopedIPCSupport> mojo_ipc_support_;
 
   // |user_input_monitor_| has to outlive |audio_manager_|, so declared first.
   std::unique_ptr<media::UserInputMonitor> user_input_monitor_;
   // AudioThread needs to outlive |audio_manager_|.
   std::unique_ptr<AudioManagerThread> audio_thread_;
   media::ScopedAudioManagerPtr audio_manager_;
+  // Calls to |audio_system_| must not be posted to the audio thread if it
+  // differs from the UI one.
+  std::unique_ptr<media::AudioSystem> audio_system_;
 
   std::unique_ptr<midi::MidiService> midi_service_;
 
 #if defined(OS_WIN)
   std::unique_ptr<media::SystemMessageWindowWin> system_message_window_;
 #elif defined(OS_LINUX) && defined(USE_UDEV)
   std::unique_ptr<media::DeviceMonitorLinux> device_monitor_linux_;
 #elif defined(OS_MACOSX) && !defined(OS_IOS)
   std::unique_ptr<media::DeviceMonitorMac> device_monitor_mac_;
 #endif
@@ skipping 10 matching lines @@
   scoped_refptr<SaveFileManager> save_file_manager_;
 
   // DO NOT add members here. Add them to the right categories above.
 
   DISALLOW_COPY_AND_ASSIGN(BrowserMainLoop);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_BROWSER_MAIN_LOOP_H_