Implementation of 'AudioContext.getOutputTimestamp' method

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 bd5797d814bf132b002f54bba94c67315bff5425..3db3becb689ef9fa72909a6467ef911a072b1f2e 100644
--- a/media/audio/simple_sources.h
+++ b/media/audio/simple_sources.h
@@ -37,7 +37,8 @@ class MEDIA_EXPORT SineWaveAudioSource
   // Implementation of AudioSourceCallback.
   int OnMoreData(AudioBus* audio_bus,
                  uint32_t total_bytes_delay,
-                 uint32_t frames_skipped) override;
+                 uint32_t frames_skipped,
+                 const AudioTimestamp& timestamp = AudioTimestamp()) override;
   void OnError(AudioOutputStream* stream) override;
 
   // The number of OnMoreData() and OnError() calls respectively.
@@ -65,7 +66,8 @@ class MEDIA_EXPORT FileSource : public AudioOutputStream::AudioSourceCallback,
   // Implementation of AudioSourceCallback.
   int OnMoreData(AudioBus* audio_bus,
                  uint32_t total_bytes_delay,
-                 uint32_t frames_skipped) override;
+                 uint32_t frames_skipped,
+                 const AudioTimestamp& timestamp = AudioTimestamp()) override;
   void OnError(AudioOutputStream* stream) override;
 
  private:
@@ -101,7 +103,8 @@ class BeepingSource : public AudioOutputStream::AudioSourceCallback {
   // Implementation of AudioSourceCallback.
   int OnMoreData(AudioBus* audio_bus,
                  uint32_t total_bytes_delay,
-                 uint32_t frames_skipped) override;
+                 uint32_t frames_skipped,
+                 const AudioTimestamp& timestamp) override;
   void OnError(AudioOutputStream* stream) override;
 
   static void BeepOnce();