Remove unused parameter to OnError()

media/audio/mac/audio_low_latency_input_mac_unittest.cc

Index: media/audio/mac/audio_low_latency_input_mac_unittest.cc
diff --git a/media/audio/mac/audio_low_latency_input_mac_unittest.cc b/media/audio/mac/audio_low_latency_input_mac_unittest.cc
index 8e5dbc30d74ca2a1efa19a4132f841216056281d..55cdceed2cfe4650b37314cb03d8904de65a6be8 100644
--- a/media/audio/mac/audio_low_latency_input_mac_unittest.cc
+++ b/media/audio/mac/audio_low_latency_input_mac_unittest.cc
@@ -34,7 +34,7 @@ class MockAudioInputCallback : public AudioInputStream::AudioInputCallback {
                             const uint8* src, uint32 size,
                             uint32 hardware_delay_bytes, double volume));
   MOCK_METHOD1(OnClose, void(AudioInputStream* stream));
-  MOCK_METHOD2(OnError, void(AudioInputStream* stream, int code));
+  MOCK_METHOD1(OnError, void(AudioInputStream* stream));
 };
 
 // This audio sink implementation should be used for manual tests only since
@@ -85,7 +85,7 @@ class WriteToFileAudioSink : public AudioInputStream::AudioInputCallback {
   }
 
   virtual void OnClose(AudioInputStream* stream) OVERRIDE {}
-  virtual void OnError(AudioInputStream* stream, int code) OVERRIDE {}
+  virtual void OnError(AudioInputStream* stream) OVERRIDE {}
 
  private:
   media::SeekableBuffer buffer_;