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

media/audio/audio_device_thread.h

Index: media/audio/audio_device_thread.h
diff --git a/media/audio/audio_device_thread.h b/media/audio/audio_device_thread.h
index 7e8e2bf4c8c9a4a8fb7c278a4f226cec43d9961f..bb0cb058ae0a4b077b97ac11a5c7032b8d42698a 100644
--- a/media/audio/audio_device_thread.h
+++ b/media/audio/audio_device_thread.h
@@ -50,8 +50,8 @@ class MEDIA_EXPORT AudioDeviceThread {
     // before Process can be called.
     virtual void MapSharedMemory() = 0;
 
-    // Called whenever we receive notifications about pending data.
-    virtual void Process(uint32 pending_data) = 0;
+    // Called whenever we receive notifications about pending input data.
+    virtual void Process(uint32_t pending_data) = 0;
 
    protected:
     // Protected so that derived classes can access directly.
@@ -75,7 +75,12 @@ class MEDIA_EXPORT AudioDeviceThread {
 
   // Starts the audio thread. The thread must not already be running.  If
   // |sychronized_buffers| is set, the browser expects to be notified via the
-  // |socket| every time AudioDeviceThread::Process() completes.
+  // |socket| every time AudioDeviceThread::Process() completes. |input| should
+  // be true for input and false for output. It is used for reading the right
+  // amount of data from the socket.
+  // TODO(grunell): |input| is ugly, but there are plans to re-use a thread for
+  // multiple inputs/outputs (see todo comment above) so we do it this way
+  // meanwhile instead of using separate classes.

[Henrik Grunell, 2015/12/08 11:12:32]

Ah, I see, I seem to have messed up resolving the merge conflicts. Removed this
comment.

   void Start(AudioDeviceThread::Callback* callback,
              base::SyncSocket::Handle socket,
              const char* thread_name,