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

media/audio/virtual_audio_output_stream.cc

Index: media/audio/virtual_audio_output_stream.cc
diff --git a/media/audio/virtual_audio_output_stream.cc b/media/audio/virtual_audio_output_stream.cc
index 29e3804fe21daa3d6488b8aa80b5463cbc796db0..149f3cc430b6a81a42b4ded1a063014060fbd61c 100644
--- a/media/audio/virtual_audio_output_stream.cc
+++ b/media/audio/virtual_audio_output_stream.cc
@@ -82,7 +82,7 @@ double VirtualAudioOutputStream::ProvideInput(AudioBus* audio_bus,
       params_.GetBytesPerSecond() * buffer_delay /
           base::TimeDelta::FromSeconds(1);
   const int frames = callback_->OnMoreData(
-      audio_bus, static_cast<uint32>(upstream_delay_in_bytes));
+      audio_bus, static_cast<uint32>(upstream_delay_in_bytes), 0);
   if (frames < audio_bus->frames())
     audio_bus->ZeroFramesPartial(frames, audio_bus->frames() - frames);