Switch AudioRenderSink::Callback to use AudioBus.

media/base/fake_audio_render_callback.h

Index: media/base/fake_audio_render_callback.h
diff --git a/media/base/fake_audio_render_callback.h b/media/base/fake_audio_render_callback.h
index b1a4e44580313e697d6752158af2e47e8d192559..f6ce1041233bbd18fa9f437ae18aa3a2be1b00cb 100644
--- a/media/base/fake_audio_render_callback.h
+++ b/media/base/fake_audio_render_callback.h
@@ -5,8 +5,6 @@
 #ifndef MEDIA_BASE_FAKE_AUDIO_RENDER_CALLBACK_H_
 #define MEDIA_BASE_FAKE_AUDIO_RENDER_CALLBACK_H_
 
-#include <vector>
-
 #include "media/base/audio_renderer_sink.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
@@ -24,8 +22,7 @@ class FakeAudioRenderCallback : public AudioRendererSink::RenderCallback {
 
   // Renders a sine wave into the provided audio data buffer.  If |half_fill_|
   // is set, will only fill half the buffer.
-  int Render(const std::vector<float*>& audio_data, int number_of_frames,
-             int audio_delay_milliseconds) OVERRIDE;
+  int Render(AudioBus* audio_bus, int audio_delay_milliseconds) OVERRIDE;
   MOCK_METHOD0(OnRenderError, void());
 
   // Toggles only filling half the requested amount during Render().