Revert 57254 - Share one thread between all AudioOutputControllers instead of...

media/audio/audio_manager_base.cc

-// Copyright (c) 2010 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/audio_manager_base.h"
-
-AudioManagerBase::AudioManagerBase()
-    : audio_thread_("AudioThread"),
-      initialized_(false) {
-}
-
-void AudioManagerBase::Init() {
-  initialized_ = audio_thread_.Start();
-}
-
-MessageLoop* AudioManagerBase::GetMessageLoop() {
-  DCHECK(initialized_);
-  return audio_thread_.message_loop();
-}