Adding key press detection in the browser process.

content/renderer/media/webrtc_audio_device_impl.h

 // Copyright 2013 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.
 
 #ifndef CONTENT_RENDERER_MEDIA_WEBRTC_AUDIO_DEVICE_IMPL_H_
 #define CONTENT_RENDERER_MEDIA_WEBRTC_AUDIO_DEVICE_IMPL_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 190 matching lines @@
   virtual ~WebRtcAudioRendererSource() {}
 };
 
 class WebRtcAudioCapturerSink {
  public:
   // Callback to deliver the captured interleaved data.
   virtual void CaptureData(const int16* audio_data,
                            int number_of_channels,
                            int number_of_frames,
                            int audio_delay_milliseconds,
-                           double volume) = 0;
+                           double volume,
+                           bool key_pressed) = 0;
 
   // Set the format for the capture audio parameters.
   virtual void SetCaptureFormat(const media::AudioParameters& params) = 0;
 
  protected:
   virtual ~WebRtcAudioCapturerSink() {}
 };
 
 // Note that this class inherits from webrtc::AudioDeviceModule but due to
 // the high number of non-implemented methods, we move the cruft over to the
@@ skipping 90 matching lines @@
   // Make destructor private to ensure that we can only be deleted by Release().
   virtual ~WebRtcAudioDeviceImpl();
 
   // WebRtcAudioCapturerSink implementation.
 
   // Called on the AudioInputDevice worker thread.
   virtual void CaptureData(const int16* audio_data,
                            int number_of_channels,
                            int number_of_frames,
                            int audio_delay_milliseconds,
-                           double volume) OVERRIDE;
+                           double volume,
+                           bool key_pressed) OVERRIDE;
 
   // Called on the main render thread.
   virtual void SetCaptureFormat(const media::AudioParameters& params) OVERRIDE;
 
   // WebRtcAudioRendererSource implementation.
 
   // Called on the AudioInputDevice worker thread.
   virtual void RenderData(uint8* audio_data,
                           int number_of_channels,
                           int number_of_frames,
@@ skipping 47 matching lines @@
   // Stores latest microphone volume received in a CaptureData() callback.
   // Range is [0, 255].
   uint32_t microphone_volume_;
 
   DISALLOW_COPY_AND_ASSIGN(WebRtcAudioDeviceImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_WEBRTC_AUDIO_DEVICE_IMPL_H_