Replace MessageLoopProxy with SingleThreadTaskRunner for the rest of media/.

chrome/browser/extensions/api/webrtc_audio_private/webrtc_audio_private_browsertest.cc

 // Copyright 2013 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/json/json_writer.h"
-#include "base/message_loop/message_loop.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/threading/platform_thread.h"
 #include "base/time/time.h"
 #include "chrome/browser/extensions/api/webrtc_audio_private/webrtc_audio_private_api.h"
 #include "chrome/browser/extensions/component_loader.h"
 #include "chrome/browser/extensions/extension_apitest.h"
 #include "chrome/browser/extensions/extension_function_test_utils.h"
@@ skipping 76 matching lines @@
 
   // Synchronously (from the calling thread's point of view) runs the
   // given enumeration function on the device thread. On return,
   // |device_names| has been filled with the device names resulting
   // from that call.
   void GetAudioDeviceNames(
       void (AudioManager::*EnumerationFunc)(AudioDeviceNames*),
       AudioDeviceNames* device_names) {
     AudioManager* audio_manager = AudioManager::Get();
 
-    if (!audio_manager->GetMessageLoop()->BelongsToCurrentThread()) {
-      audio_manager->GetMessageLoop()->PostTask(
+    if (!audio_manager->GetTaskRunner()->BelongsToCurrentThread()) {
+      audio_manager->GetTaskRunner()->PostTask(
           FROM_HERE,
           base::Bind(&WebrtcAudioPrivateTest::GetAudioDeviceNames, this,
                      EnumerationFunc, device_names));
       enumeration_event_.Wait();
     } else {
       (audio_manager->*EnumerationFunc)(device_names);
       enumeration_event_.Signal();
     }
   }
 
@@ skipping 218 matching lines @@
 
   ASSERT_TRUE(content::ExecuteScript(tab, "browsertestRunAllTests();"));
 
   content::TitleWatcher title_watcher(tab, ASCIIToUTF16("success"));
   title_watcher.AlsoWaitForTitle(ASCIIToUTF16("failure"));
   string16 result = title_watcher.WaitAndGetTitle();
   EXPECT_EQ(ASCIIToUTF16("success"), result);
 }
 
 }  // namespace extensions