Removes unused APIs from the ADM (part II)

webrtc/modules/audio_device/audio_device_buffer.h

Index: webrtc/modules/audio_device/audio_device_buffer.h
diff --git a/webrtc/modules/audio_device/audio_device_buffer.h b/webrtc/modules/audio_device/audio_device_buffer.h
index 2a5a84b22fa60ad8066e629538c67591e963054a..a9163ea0a611570792a3863c40220fe63ee68ec4 100644
--- a/webrtc/modules/audio_device/audio_device_buffer.h
+++ b/webrtc/modules/audio_device/audio_device_buffer.h
@@ -108,14 +108,6 @@ class AudioDeviceBuffer {
   virtual int32_t RequestPlayoutData(size_t samples_per_channel);
   virtual int32_t GetPlayoutData(void* audio_buffer);
 
-  // TODO(henrika): these methods should not be used and does not contain any
-  // valid implementation. Investigate the possibility to either remove them
-  // or add a proper implementation if needed.
-  int32_t StartInputFileRecording(const char fileName[kAdmMaxFileNameSize]);
-  int32_t StopInputFileRecording();
-  int32_t StartOutputFileRecording(const char fileName[kAdmMaxFileNameSize]);
-  int32_t StopOutputFileRecording();
-
   int32_t SetTypingStatus(bool typing_status);
 
   // Called on iOS where the native audio layer can be interrupted by other