Style changes in Audio Mixer

webrtc/modules/audio_mixer/audio_frame_manipulator.h

Index: webrtc/modules/audio_mixer/audio_frame_manipulator.h
diff --git a/webrtc/modules/audio_mixer/audio_frame_manipulator.h b/webrtc/modules/audio_mixer/audio_frame_manipulator.h
index 58103addebba945dc51779477d610b62123d2acf..444891f2a0c5bf812574a1ef2fc0f300d176e7f4 100644
--- a/webrtc/modules/audio_mixer/audio_frame_manipulator.h
+++ b/webrtc/modules/audio_mixer/audio_frame_manipulator.h
@@ -11,10 +11,10 @@
 #ifndef WEBRTC_MODULES_AUDIO_MIXER_AUDIO_FRAME_MANIPULATOR_H_
 #define WEBRTC_MODULES_AUDIO_MIXER_AUDIO_FRAME_MANIPULATOR_H_
 
+#include "webrtc/modules/include/module_common_types.h"
 #include "webrtc/typedefs.h"
 
 namespace webrtc {
-class AudioFrame;
 
 // Updates the audioFrame's energy (based on its samples).
 uint32_t NewMixerCalculateEnergy(const AudioFrame& audio_frame);