Plumb render view ID to media observer

content/renderer/media/renderer_webaudiodevice_impl.h

Index: content/renderer/media/renderer_webaudiodevice_impl.h
diff --git a/content/renderer/media/renderer_webaudiodevice_impl.h b/content/renderer/media/renderer_webaudiodevice_impl.h
index f984f1dc62ea17e6462bb93bcda399119b0de0fd..ae9ed5e2e3e392aebfa77dad3d4594100e6b79c8 100644
--- a/content/renderer/media/renderer_webaudiodevice_impl.h
+++ b/content/renderer/media/renderer_webaudiodevice_impl.h
@@ -12,6 +12,10 @@
 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebAudioDevice.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebVector.h"
 
+namespace content {
+class RenderView;
+}
+
 namespace media {
 class AudioRendererSink;
 }
@@ -20,7 +24,8 @@ class RendererWebAudioDeviceImpl
     : public WebKit::WebAudioDevice,
       public media::AudioRendererSink::RenderCallback {
  public:
-  RendererWebAudioDeviceImpl(const media::AudioParameters& params,
+  RendererWebAudioDeviceImpl(content::RenderView* render_view,
+                             const media::AudioParameters& params,
                              WebKit::WebAudioDevice::RenderCallback* callback);
   virtual ~RendererWebAudioDeviceImpl();