Replace MessageLoopProxy with SingleThreadTaskRunner for the rest of media/.

media/audio/test_audio_input_controller_factory.cc

 // 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.
 
 #include "media/audio/test_audio_input_controller_factory.h"
 #include "media/audio/audio_io.h"
 
 namespace media {
 
 TestAudioInputController::TestAudioInputController(
     TestAudioInputControllerFactory* factory,
     AudioManager* audio_manager,
     const AudioParameters& audio_parameters,
     EventHandler* event_handler,
     SyncWriter* sync_writer,
     UserInputMonitor* user_input_monitor)
     : AudioInputController(event_handler, sync_writer, user_input_monitor),
       audio_parameters_(audio_parameters),
       factory_(factory),
       event_handler_(event_handler) {
-  message_loop_ = audio_manager->GetMessageLoop();
+  task_runner_ = audio_manager->GetTaskRunner();
 }
 
 TestAudioInputController::~TestAudioInputController() {
   // Inform the factory so that it allows creating new instances in future.
   factory_->OnTestAudioInputControllerDestroyed(this);
 }
 
 void TestAudioInputController::Record() {
   if (factory_->delegate_)
     factory_->delegate_->TestAudioControllerOpened(this);
 }
 
 void TestAudioInputController::Close(const base::Closure& closed_task) {
-  message_loop_->PostTask(FROM_HERE, closed_task);
+  task_runner_->PostTask(FROM_HERE, closed_task);
   if (factory_->delegate_)
     factory_->delegate_->TestAudioControllerClosed(this);
 }
 
 TestAudioInputControllerFactory::TestAudioInputControllerFactory()
     : controller_(NULL),
       delegate_(NULL) {
 }
 
 TestAudioInputControllerFactory::~TestAudioInputControllerFactory() {
@@ skipping 11 matching lines @@
   return controller_;
 }
 
 void TestAudioInputControllerFactory::OnTestAudioInputControllerDestroyed(
     TestAudioInputController* controller) {
   DCHECK_EQ(controller_, controller);
   controller_ = NULL;
 }
 
 }  // namespace media