Plumb render view ID to media observer

content/renderer/media/audio_device_factory.h

 // 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.
 
 #ifndef CONTENT_RENDERER_MEDIA_AUDIO_DEVICE_FACTORY_H_
 #define CONTENT_RENDERER_MEDIA_AUDIO_DEVICE_FACTORY_H_
 
 #include "base/basictypes.h"
 #include "content/common/content_export.h"
 
+namespace content {
+class RenderView;
+}
+
 namespace media {
 class AudioRendererSink;
 }
 
 namespace content {
 
 // A factory for creating AudioRendererSinks. There is a global factory
 // function that can be installed for the purposes of testing to provide
 // a specialized AudioRendererSink class.
 // This class uses the same pattern as content::RenderViewHostFactory.
 class CONTENT_EXPORT AudioDeviceFactory {
  public:
   // Creates an AudioRendererSink using the currently registered factory,
   // or the default one if no factory is registered. Ownership of the returned
   // pointer will be passed to the caller.
- static media::AudioRendererSink* Create();
+ static media::AudioRendererSink* Create(RenderView* render_view);
 
  protected:
   AudioDeviceFactory();
   virtual ~AudioDeviceFactory();
 
   // You can derive from this class and specify an implementation for this
   // function to create a different kind of AudioRendererSink for testing.
   virtual media::AudioRendererSink* CreateAudioDevice() = 0;
 
  private:
   // The current globally registered factory. This is NULL when we should
   // create the default AudioRendererSinks.
   static AudioDeviceFactory* factory_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioDeviceFactory);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_AUDIO_DEVICE_FACTORY_H_