Create AudioRendererHost in BrowserRenderProcessHost and hook with ResourceMessageFilter

media/audio/audio_output.h

 // Copyright (c) 2006-2008 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 MEDIA_AUDIO_AUDIO_OUTPUT_H_
 #define MEDIA_AUDIO_AUDIO_OUTPUT_H_
 
+#include "base/basictypes.h"
+
 // Low-level audio output support. To make sound there are 3 objects involved:
 // - AudioSource : produces audio samples on a pull model. Implements
 //   the AudioSourceCallback interface.
 // - AudioOutputStream : uses the AudioSource to render audio on a given
 //   channel, format and sample frequency configuration. Data from the
 //   AudioSource is delivered in a 'pull' model.
 // - AudioManager : factory for the AudioOutputStream objects, manager
 //   of the hardware resources and mixer control.
 //
 // The number and configuration of AudioOutputStream does not need to match the
@@ skipping 126 matching lines @@
   // TODO(cpu): Define threading requirements for interacting with AudioManager.
   static AudioManager* GetAudioManager();
 
  protected:
   virtual ~AudioManager() {}
 };
 
 
 #endif  // MEDIA_AUDIO_AUDIO_OUTPUT_H_