Add support for audio input mute detection on all platforms

media/audio/win/wavein_input_win.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "media/audio/win/wavein_input_win.h"
 
 #pragma comment(lib, "winmm.lib")
 
 #include "base/logging.h"
 #include "media/audio/audio_io.h"
@@ skipping 208 matching lines @@
   // TODO(henrika): Add AGC support when volume control has been added.
   NOTIMPLEMENTED();
 }
 
 bool PCMWaveInAudioInputStream::GetAutomaticGainControl() {
   // TODO(henrika): Add AGC support when volume control has been added.
   NOTIMPLEMENTED();
   return false;
 }
 
+bool PCMWaveInAudioInputStream::IsMuted() {
+  NOTIMPLEMENTED();
+  return false;
+}
+
 void PCMWaveInAudioInputStream::HandleError(MMRESULT error) {
   DLOG(WARNING) << "PCMWaveInAudio error " << error;
   if (callback_)
     callback_->OnError(this);
 }
 
 void PCMWaveInAudioInputStream::QueueNextPacket(WAVEHDR *buffer) {
   MMRESULT res = ::waveInAddBuffer(wavein_, buffer, sizeof(WAVEHDR));
   if (res != MMSYSERR_NOERROR)
     HandleError(res);
@@ skipping 72 matching lines @@
       ::SetEvent(obj->stopped_event_.Get());
     }
   } else if (msg == WIM_CLOSE) {
     // Intentionaly no-op for now.
   } else if (msg == WIM_OPEN) {
     // Intentionaly no-op for now.
   }
 }
 
 }  // namespace media