Merge AssociateStreamWithProducer message into CreateStream message for both audio output and input.

content/browser/renderer_host/media/audio_renderer_host.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.
 //
 // AudioRendererHost serves audio related requests from AudioRenderer which
 // lives inside the render process and provide access to audio hardware.
 //
 // This class is owned by BrowserRenderProcessHost, and instantiated on UI
 // thread, but all other operations and method calls happen on IO thread, so we
 // need to be extra careful about the lifetime of this object. AudioManager is a
@@ skipping 87 matching lines @@
   FRIEND_TEST_ALL_PREFIXES(AudioRendererHostTest, MockStreamDataConversation);
 
   struct AudioEntry;
   typedef std::map<int, AudioEntry*> AudioEntryMap;
 
   virtual ~AudioRendererHost();
 
   // Methods called on IO thread ----------------------------------------------
 
   // Audio related IPC message handlers.
-  // Creates an audio output stream with the specified format. If this call is
-  // successful this object would keep an internal entry of the stream for the
-  // required properties.
+
+  // Creates an audio output stream with the specified format whose data is
+  // produced by an entity in the render view referenced by |render_view_id|.
+  // If this call is successful this object would keep an internal entry of the

[palmer, 2013/03/05 21:09:32]

Same comment as before: Probably should says "does keep", and how do callers
know if the call was successful?

[miu, 2013/03/06 22:36:52]

Done.

+  // stream for the required properties.
   void OnCreateStream(int stream_id,
+                      int render_view_id,
                       const media::AudioParameters& params);
 
-  // Track that the data for the audio stream referenced by |stream_id| is
-  // produced by an entity in the render view referenced by |render_view_id|.
-  void OnAssociateStreamWithProducer(int stream_id, int render_view_id);
-
   // Play the audio stream referenced by |stream_id|.
   void OnPlayStream(int stream_id);
 
   // Pause the audio stream referenced by |stream_id|.
   void OnPauseStream(int stream_id);
 
   // Discard all audio data in stream referenced by |stream_id|.
   void OnFlushStream(int stream_id);
 
   // Close the audio stream referenced by |stream_id|.
@@ skipping 52 matching lines @@
 
   // A map of stream IDs to audio sources.
   AudioEntryMap audio_entries_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioRendererHost);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_AUDIO_RENDERER_HOST_H_