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

media/audio/simple_sources.h

Index: media/audio/simple_sources.h
diff --git a/media/audio/simple_sources.h b/media/audio/simple_sources.h
index 7a10a342032066880cb7a6bb14618a789eccd983..075b4a7c7698a6d217da5cf942a5d1e8adff2b8f 100644
--- a/media/audio/simple_sources.h
+++ b/media/audio/simple_sources.h
@@ -31,7 +31,9 @@ class MEDIA_EXPORT SineWaveAudioSource
   void Reset();
 
   // Implementation of AudioSourceCallback.
-  int OnMoreData(AudioBus* audio_bus, uint32 total_bytes_delay) override;
+  int OnMoreData(AudioBus* audio_bus,
+                 uint32_t total_bytes_delay,
+                 uint32_t frames_skipped) override;
   void OnError(AudioOutputStream* stream) override;
 
   // The number of OnMoreData() and OnError() calls respectively.
@@ -56,7 +58,9 @@ class MEDIA_EXPORT FileSource : public AudioOutputStream::AudioSourceCallback,
   ~FileSource() override;
 
   // Implementation of AudioSourceCallback.
-  int OnMoreData(AudioBus* audio_bus, uint32 total_bytes_delay) override;
+  int OnMoreData(AudioBus* audio_bus,
+                 uint32_t total_bytes_delay,
+                 uint32_t frames_skipped) override;
   void OnError(AudioOutputStream* stream) override;
 
  private:
@@ -87,7 +91,9 @@ class BeepingSource : public AudioOutputStream::AudioSourceCallback {
   ~BeepingSource() override;
 
   // Implementation of AudioSourceCallback.
-  int OnMoreData(AudioBus* audio_bus, uint32 total_bytes_delay) override;
+  int OnMoreData(AudioBus* audio_bus,
+                 uint32_t total_bytes_delay,
+                 uint32_t frames_skipped) override;
   void OnError(AudioOutputStream* stream) override;
 
   static void BeepOnce();