Modifies AudioInputCallback::OnData and use media::AudioBus instead of plain byte vector (Relanding)

content/browser/media/capture/web_contents_audio_input_stream_unittest.cc

Index: content/browser/media/capture/web_contents_audio_input_stream_unittest.cc
diff --git a/content/browser/media/capture/web_contents_audio_input_stream_unittest.cc b/content/browser/media/capture/web_contents_audio_input_stream_unittest.cc
index c9afbf1e0f9a179814d117bd7553b0d7cd1d4e12..72f6109029d1b6432c97a91d26d664fa093bfd38 100644
--- a/content/browser/media/capture/web_contents_audio_input_stream_unittest.cc
+++ b/content/browser/media/capture/web_contents_audio_input_stream_unittest.cc
@@ -161,9 +161,11 @@ class MockAudioInputCallback : public AudioInputStream::AudioInputCallback {
  public:
   MockAudioInputCallback() {}
 
-  MOCK_METHOD5(OnData, void(AudioInputStream* stream, const uint8* src,
-                            uint32 size, uint32 hardware_delay_bytes,
-                            double volume));
+  MOCK_METHOD4(OnData,
+               void(AudioInputStream* stream,
+                    const media::AudioBus* src,
+                    uint32 hardware_delay_bytes,
+                    double volume));
   MOCK_METHOD1(OnError, void(AudioInputStream* stream));
 
  private:
@@ -238,7 +240,7 @@ class WebContentsAudioInputStreamTest : public testing::Test {
             static_cast<AudioMirroringManager::MirroringDestination*>(NULL)))
         .RetiresOnSaturation();
 
-    EXPECT_CALL(mock_input_callback_, OnData(NotNull(), NotNull(), _, _, _))
+    EXPECT_CALL(mock_input_callback_, OnData(NotNull(), NotNull(), _, _))
         .WillRepeatedly(
             InvokeWithoutArgs(&on_data_event_, &base::WaitableEvent::Signal));