Adds AudioDevice factory for all audio clients in Chrome

content/renderer/media/render_audiosourceprovider.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/render_audiosourceprovider.h"
 
 #include "base/basictypes.h"
 #include "base/logging.h"
+#include "content/renderer/media/audio_device_factory.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebAudioSourceProviderClient.h"
 
+using content::AudioDeviceFactory;
 using std::vector;
 using WebKit::WebVector;
 
 RenderAudioSourceProvider::RenderAudioSourceProvider()
     : is_initialized_(false),
       channels_(0),
       sample_rate_(0),
       is_running_(false),
       volume_(1.0),
       renderer_(NULL),
       client_(NULL) {
-  // We create the AudioDevice here because it must be created in the
-  // main thread.  But we don't yet know the audio format (sample-rate, etc.)
-  // at this point.  Later, when Initialize() is called, we have
-  // the audio format information and call the AudioDevice::Initialize()
-  // method to fully initialize it.
-  default_sink_ = new AudioDevice();
+  // We create the AudioDevice here using the factory. But we don't yet know
+  // the audio format (sample-rate, etc.) at this point.  Later, when
+  // Initialize() is called, we have the audio format information and call
+  // the AudioDevice::Initialize() method to fully initialize it.
+  default_sink_ = AudioDeviceFactory::Create();
 }
 
 void RenderAudioSourceProvider::setClient(
     WebKit::WebAudioSourceProviderClient* client) {
   // Synchronize with other uses of client_ and default_sink_.
   base::AutoLock auto_lock(sink_lock_);
 
   if (client && client != client_) {
     // Detach the audio renderer from normal playback.
     default_sink_->Stop();
@@ skipping 101 matching lines @@
 
   if (client_) {
     // Inform WebKit about the audio stream format.
     client_->setFormat(channels_, sample_rate_);
   }
 
   is_initialized_ = true;
 }
 
 RenderAudioSourceProvider::~RenderAudioSourceProvider() {}