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

content/browser/renderer_host/media/audio_input_renderer_host.cc

Index: content/browser/renderer_host/media/audio_input_renderer_host.cc
diff --git a/content/browser/renderer_host/media/audio_input_renderer_host.cc b/content/browser/renderer_host/media/audio_input_renderer_host.cc
index 5c7380f1c157faf4f3c3e31d7dfd8c87c68a767b..811e70cc20ec1bd03d866f7ae23c2f8ed75922a2 100644
--- a/content/browser/renderer_host/media/audio_input_renderer_host.cc
+++ b/content/browser/renderer_host/media/audio_input_renderer_host.cc
@@ -183,14 +183,24 @@ void AudioInputRendererHost::OnStartDevice(int stream_id, int session_id) {
   media_stream_manager_->audio_input_device_manager()->Start(session_id, this);
 }
 
+// TODO(miu): AudioInputRendererHost will keep track of the render_view_id
+// associated with the created audio stream in a soon-upcoming change.
 void AudioInputRendererHost::OnCreateStream(
-    int stream_id, const media::AudioParameters& params,
+    int render_view_id, int stream_id, const media::AudioParameters& params,
     const std::string& device_id, bool automatic_gain_control) {
-  VLOG(1) << "AudioInputRendererHost::OnCreateStream(stream_id="
-          << stream_id << ")";
   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: AudioInputRendererHost::OnCreateStream called with unknown "
+          "render view.");
+  VLOG(1) << "AudioInputRendererHost@" << this
+          << "::OnCreateStream(render_view_id=" << render_view_id
+          << ", stream_id=" << stream_id << ")";
+
   media::AudioParameters audio_params(params);
 
   DCHECK_GT(audio_params.frames_per_buffer(), 0);