Plumb render view ID to media observer

content/renderer/media/audio_device_factory.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/audio_device_factory.h"
 
 #include "base/logging.h"
 #include "content/common/child_process.h"
 #include "content/renderer/media/audio_device.h"
 
 namespace content {
 
 // static
 AudioDeviceFactory* AudioDeviceFactory::factory_ = NULL;
 
 // static
-media::AudioRendererSink* AudioDeviceFactory::Create() {
+media::AudioRendererSink* AudioDeviceFactory::Create(RenderView* render_view) {
   if (factory_) {
     return factory_->CreateAudioDevice();
   }
   return new AudioDevice(
+      render_view,
       ChildProcess::current()->io_message_loop()->message_loop_proxy());
 }
 
 AudioDeviceFactory::AudioDeviceFactory() {
   DCHECK(!factory_) << "Can't register two factories at once.";
   factory_ = this;
 }
 
 AudioDeviceFactory::~AudioDeviceFactory() {
   factory_ = NULL;
 }
 
 }  // namespace content