Pass more detailed audio hardware configuration information to the renderer

content/renderer/renderer_webkitplatformsupport_impl.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.
 
 #ifndef CONTENT_RENDERER_RENDERER_WEBKITPLATFORMSUPPORT_IMPL_H_
 #define CONTENT_RENDERER_RENDERER_WEBKITPLATFORMSUPPORT_IMPL_H_
 
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/platform_file.h"
@@ skipping 61 matching lines @@
       const WebKit::WebString& challenge,
       const WebKit::WebURL& url);
   virtual void screenColorProfile(WebKit::WebVector<char>* to_profile);
   virtual WebKit::WebIDBFactory* idbFactory();
   virtual WebKit::WebFileSystem* fileSystem();
   virtual WebKit::WebSharedWorkerRepository* sharedWorkerRepository();
   virtual bool canAccelerate2dCanvas();
   virtual bool isThreadedCompositingEnabled();
   virtual double audioHardwareSampleRate();
   virtual size_t audioHardwareBufferSize();
+  virtual unsigned audioHardwareOutputChannels();
 
   // TODO(crogers): remove deprecated API as soon as WebKit calls new API.
   virtual WebKit::WebAudioDevice* createAudioDevice(
       size_t buffer_size, unsigned channels, double sample_rate,
       WebKit::WebAudioDevice::RenderCallback* callback);
   // TODO(crogers): remove deprecated API as soon as WebKit calls new API.
   virtual WebKit::WebAudioDevice* createAudioDevice(
       size_t buffer_size, unsigned input_channels, unsigned channels,
       double sample_rate, WebKit::WebAudioDevice::RenderCallback* callback);
 
@@ skipping 70 matching lines @@
   scoped_ptr<GamepadSharedMemoryReader> gamepad_shared_memory_reader_;
 
   scoped_refptr<ThreadSafeSender> thread_safe_sender_;
 
   scoped_refptr<cc::ContextProvider> shared_offscreen_context_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDERER_WEBKITPLATFORMSUPPORT_IMPL_H_