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

chromecast/media/audio/cast_audio_output_stream_unittest.cc

Index: chromecast/media/audio/cast_audio_output_stream_unittest.cc
diff --git a/chromecast/media/audio/cast_audio_output_stream_unittest.cc b/chromecast/media/audio/cast_audio_output_stream_unittest.cc
index 6d2f734c4b4007e3584e48c7fa50db075bdae1e0..403655c5c660c61869de0a8346aacae16ae0e168 100644
--- a/chromecast/media/audio/cast_audio_output_stream_unittest.cc
+++ b/chromecast/media/audio/cast_audio_output_stream_unittest.cc
@@ -168,7 +168,8 @@ class FakeAudioSourceCallback
 
   // ::media::AudioOutputStream::AudioSourceCallback overrides.
   int OnMoreData(::media::AudioBus* audio_bus,
-                 uint32 total_bytes_delay) override {
+                 uint32_t total_bytes_delay,
+                 uint32_t frames_skipped) override {
     audio_bus->Zero();
     return audio_bus->frames();
   }