Adding key press detection in the browser process.

media/audio/audio_input_device.cc

Index: media/audio/audio_input_device.cc
diff --git a/media/audio/audio_input_device.cc b/media/audio/audio_input_device.cc
index 87fd57143cd1433568c2dab8b3fc83e52112415a..5477be6e63fd98ad450699a1849f11c6b0163ca0 100644
--- a/media/audio/audio_input_device.cc
+++ b/media/audio/audio_input_device.cc
@@ -294,6 +294,7 @@ void AudioInputDevice::AudioThreadCallback::Process(int pending_data) {
   DCHECK_EQ(buffer->params.size,
             segment_length_ - sizeof(AudioInputBufferParameters));
   double volume = buffer->params.volume;
+  bool key_pressed = buffer->params.key_pressed;
 
   int audio_delay_milliseconds = pending_data / bytes_per_ms_;
   int16* memory = reinterpret_cast<int16*>(&buffer->audio[0]);
@@ -308,8 +309,8 @@ void AudioInputDevice::AudioThreadCallback::Process(int pending_data) {
 
   // Deliver captured data to the client in floating point format
   // and update the audio-delay measurement.
-  capture_callback_->Capture(audio_bus_.get(),
-                             audio_delay_milliseconds, volume);
+  capture_callback_->Capture(
+      audio_bus_.get(), audio_delay_milliseconds, volume, key_pressed);
 }
 
 }  // namespace media