Forward the number of skipped frames by the OS in audio playout.

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 02fa7a7ad681c68b08085a77807905f414e21b2b..c185553c36e1538da459482b1a837615856fff3d 100644
--- a/media/audio/audio_input_device.cc
+++ b/media/audio/audio_input_device.cc
@@ -38,6 +38,8 @@ class AudioInputDevice::AudioThreadCallback
   // Called whenever we receive notifications about pending data.
   void Process(uint32 pending_data) override;
 
+  void FramesSkipped(uint32_t frames_skipped) override;
+
  private:
   int current_segment_id_;
   uint32 last_buffer_id_;
@@ -141,8 +143,8 @@ void AudioInputDevice::OnStreamCreated(
   DCHECK(audio_thread_.IsStopped());
   audio_callback_.reset(new AudioInputDevice::AudioThreadCallback(
       audio_parameters_, handle, length, total_segments, callback_));
-  audio_thread_.Start(
-      audio_callback_.get(), socket_handle, "AudioInputDevice", true);
+  audio_thread_.Start(audio_callback_.get(), socket_handle, "AudioInputDevice",
+                      true, true);
 
   state_ = RECORDING;
   ipc_->RecordStream();
@@ -342,4 +344,10 @@ void AudioInputDevice::AudioThreadCallback::Process(uint32 pending_data) {
     current_segment_id_ = 0;
 }
 
+void AudioInputDevice::AudioThreadCallback::FramesSkipped(
+    uint32_t frames_skipped) {
+  // Should not be called for input.
+  NOTREACHED();
+}
+
 }  // namespace media