Refactor the Get*Hardware* routines a bit.

content/renderer/renderer_webkitplatformsupport_impl.cc

Index: content/renderer/renderer_webkitplatformsupport_impl.cc
===================================================================
--- content/renderer/renderer_webkitplatformsupport_impl.cc	(revision 110480)
+++ content/renderer/renderer_webkitplatformsupport_impl.cc	(working copy)
@@ -22,6 +22,7 @@
 #include "content/public/renderer/content_renderer_client.h"
 #include "content/renderer/gpu/webgraphicscontext3d_command_buffer_impl.h"
 #include "content/renderer/media/audio_device.h"
+#include "content/renderer/media/audio_hardware.h"
 #include "content/renderer/render_thread_impl.h"
 #include "content/renderer/renderer_webaudiodevice_impl.h"
 #include "content/renderer/renderer_webidbfactory_impl.h"
@@ -564,11 +565,11 @@
 }
 
 double RendererWebKitPlatformSupportImpl::audioHardwareSampleRate() {
-  return AudioDevice::GetAudioHardwareSampleRate();
+  return audio_hardware::GetOutputSampleRate();
 }
 
 size_t RendererWebKitPlatformSupportImpl::audioHardwareBufferSize() {
-  return AudioDevice::GetAudioHardwareBufferSize();
+  return audio_hardware::GetOutputBufferSize();
 }
 
 WebAudioDevice*