Plumb render view ID from audio-related code in renderer through IPCs to AudioRendererHost in brows…

content/browser/renderer_host/media/audio_renderer_host.cc

Index: content/browser/renderer_host/media/audio_renderer_host.cc
diff --git a/content/browser/renderer_host/media/audio_renderer_host.cc b/content/browser/renderer_host/media/audio_renderer_host.cc
index 478899c343a8dda61c25d2a1cb4593008640a073..9c1156d2c4b55050c3fd699305540cd12e4dac9c 100644
--- a/content/browser/renderer_host/media/audio_renderer_host.cc
+++ b/content/browser/renderer_host/media/audio_renderer_host.cc
@@ -194,11 +194,24 @@ bool AudioRendererHost::OnMessageReceived(const IPC::Message& message,
   return handled;
 }
 
+// TODO(miu): AudioRendererHost will keep track of the render_view_id associated
+// with the created audio stream in a soon-upcoming change.
 void AudioRendererHost::OnCreateStream(
-    int stream_id, const media::AudioParameters& params, int input_channels) {
+    int render_view_id, int stream_id, const media::AudioParameters& params,
+    int input_channels) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   DCHECK(LookupById(stream_id) == NULL);
 
+  // TODO(miu): There is still code in the renderer which has been stubbed out,
+  // and should be implemented to plumb in the source render_view_id.  In debug
+  // mode, log a WARNING until this is resolved.
+  DLOG_IF(WARNING, render_view_id <= 0)
+      << ("FIXME: AudioRendererHost::OnCreateStream called with unknown render "
+          "view.");
+  DVLOG(1) << "AudioRendererHost@" << this
+           << "::OnCreateStream(render_view_id=" << render_view_id
+           << ", stream_id=" << stream_id << ")";
+
   media::AudioParameters audio_params(params);
   uint32 buffer_size = media::AudioBus::CalculateMemorySize(audio_params);
   DCHECK_GT(buffer_size, 0U);