Remove dead RenderThreadImpl::GetAudioHardwareConfig.

content/renderer/render_thread_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_RENDER_THREAD_IMPL_H_
 #define CONTENT_RENDERER_RENDER_THREAD_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 58 matching lines @@
 
 namespace gpu {
 class GpuChannelHost;
 }
 
 namespace IPC {
 class MessageFilter;
 }
 
 namespace media {
-class AudioHardwareConfig;
 class GpuVideoAcceleratorFactories;
 }
 
 namespace memory_coordinator {
 class ChildMemoryCoordinatorImpl;
 }
 
 namespace scheduler {
 class WebThreadBase;
 }
@@ skipping 276 matching lines @@
 
   media::GpuVideoAcceleratorFactories* GetGpuFactories();
 
   scoped_refptr<ContextProviderCommandBuffer> SharedMainThreadContextProvider();
 
   // AudioRendererMixerManager instance which manages renderer side mixer
   // instances shared based on configured audio parameters.  Lazily created on
   // first call.
   AudioRendererMixerManager* GetAudioRendererMixerManager();
 
-  // AudioHardwareConfig contains audio hardware configuration for
-  // renderer side clients.  Creation requires a synchronous IPC call so it is
-  // lazily created on the first call.
-  media::AudioHardwareConfig* GetAudioHardwareConfig();
-
 #if defined(OS_WIN)
   void PreCacheFontCharacters(const LOGFONT& log_font,
                               const base::string16& str);
 #endif
 
   // For producing custom V8 histograms. Custom histograms are produced if all
   // RenderViews share the same host, and the host is in the pre-specified set
   // of hosts we want to produce custom diagrams for. The name for a custom
   // diagram is the name of the corresponding generic diagram plus a
   // host-specific suffix.
@@ skipping 321 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(RenderThreadImpl);
 };
 
 #if defined(COMPILER_MSVC)
 #pragma warning(pop)
 #endif
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_THREAD_IMPL_H_