Plumb render view ID to media observer

content/renderer/media/audio_device.h

Index: content/renderer/media/audio_device.h
diff --git a/content/renderer/media/audio_device.h b/content/renderer/media/audio_device.h
index 1eee2c33480e8a24def1a997cfd716b902cfb160..e2b41d28a8353b6d5fbae234491dcd36a33dc903 100644
--- a/content/renderer/media/audio_device.h
+++ b/content/renderer/media/audio_device.h
@@ -81,6 +81,7 @@ class AudioParameters;
 
 namespace content {
 class AudioDeviceFactory;
+class RenderView;
 }
 
 class CONTENT_EXPORT AudioDevice
@@ -116,7 +117,8 @@ class CONTENT_EXPORT AudioDevice
   // access to the constructor.
   // TODO(tommi): When all dependencies on |content| have been removed
   // from AudioDevice, move this class over to media/audio.
-  explicit AudioDevice(const scoped_refptr<base::MessageLoopProxy>& io_loop);
+  AudioDevice(content::RenderView* render_view,
+              const scoped_refptr<base::MessageLoopProxy>& io_loop);
 
   // Magic required by ref_counted.h to avoid any code deleting the object
   // accidentally while there are references to it.
@@ -140,6 +142,8 @@ class CONTENT_EXPORT AudioDevice
   // If the IO loop dies before we do, we shut down the audio thread from here.
   virtual void WillDestroyCurrentMessageLoop() OVERRIDE;
 
+  content::RenderView* render_view_;
+
   media::AudioParameters audio_parameters_;
 
   RenderCallback* callback_;