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

content/renderer/media/renderer_webaudiodevice_impl.cc

 // 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.
 
 #include "content/renderer/media/renderer_webaudiodevice_impl.h"
 
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "content/renderer/media/audio_device_factory.h"
 #include "media/base/media_switches.h"
 
 using content::AudioDeviceFactory;
 using WebKit::WebAudioDevice;
 using WebKit::WebVector;
 
 RendererWebAudioDeviceImpl::RendererWebAudioDeviceImpl(
+    int render_view_id,
     const media::AudioParameters& params,
     WebAudioDevice::RenderCallback* callback)
     : is_running_(false),
       client_callback_(callback) {
-  audio_device_ = AudioDeviceFactory::NewOutputDevice();
+  audio_device_ = AudioDeviceFactory::NewOutputDevice(render_view_id);
 
   // TODO(crogers): remove once we properly handle input device selection.
   // https://code.google.com/p/chromium/issues/detail?id=147327
   if (CommandLine::ForCurrentProcess()->HasSwitch(
       switches::kEnableWebAudioInput)) {
     // TODO(crogers): support more than hard-coded stereo:
     // https://code.google.com/p/chromium/issues/detail?id=147326
     audio_device_->InitializeIO(params, 2, this);
   } else {
     audio_device_->Initialize(params, this);
@@ skipping 49 matching lines @@
 
     client_callback_->render(web_audio_input_data,
                              web_audio_data,
                              dest->frames());
   }
 }
 
 void RendererWebAudioDeviceImpl::OnRenderError() {
   // TODO(crogers): implement error handling.
 }