Replace MessageLoopProxy with SingleThreadTaskRunner for the rest of media/.

media/audio/audio_output_controller_unittest.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 "base/basictypes.h"
 #include "base/bind.h"
 #include "base/environment.h"
 #include "base/logging.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 148 matching lines @@
   void ChangeDevice() {
     // Expect the event handler to receive one OnPaying() call and no OnPaused()
     // call.
     EXPECT_CALL(mock_event_handler_, OnPlaying())
         .WillOnce(SignalEvent(&play_event_));
     EXPECT_CALL(mock_event_handler_, OnPaused())
         .Times(0);
 
     // Simulate a device change event to AudioOutputController from the
     // AudioManager.
-    audio_manager_->GetMessageLoop()->PostTask(
+    audio_manager_->GetTaskRunner()->PostTask(
         FROM_HERE,
         base::Bind(&AudioOutputController::OnDeviceChange, controller_));
   }
 
   void Divert(bool was_playing, int num_times_to_be_started) {
     if (was_playing) {
       // Expect the handler to receive one OnPlaying() call as a result of the
       // stream switching.
       EXPECT_CALL(mock_event_handler_, OnPlaying())
           .WillOnce(SignalEvent(&play_event_));
@@ skipping 231 matching lines @@
 
 TEST_F(AudioOutputControllerTest, DivertRevertClose) {
   Create(kSamplesPerPacket);
   WaitForCreate();
   DivertNeverPlaying();
   RevertWasNotPlaying();
   Close();
 }
 
 }  // namespace media