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 <vector>
 
@@ skipping 205 matching lines @@
   // audio processing.
   // The return value is the new microphone volume, in the range of |0, 255].
   // When the volume does not need to be updated, it returns 0.
   virtual int CaptureData(const std::vector<int>& channels,
                           const int16* audio_data,
                           int sample_rate,
                           int number_of_channels,
                           int number_of_frames,
                           int audio_delay_milliseconds,
                           int current_volume,
-                          bool need_audio_processing) = 0;
+                          bool need_audio_processing,
+                          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 95 matching lines @@
   // WebRtcAudioCapturerSink implementation.
 
   // Called on the AudioInputDevice worker thread.
   virtual int CaptureData(const std::vector<int>& channels,
                           const int16* audio_data,
                           int sample_rate,
                           int number_of_channels,
                           int number_of_frames,
                           int audio_delay_milliseconds,
                           int current_volume,
-                          bool need_audio_processing) OVERRIDE;
+                          bool need_audio_processing,
+                          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_