Implementation of 'AudioContext.getOutputTimestamp' method

third_party/WebKit/Source/modules/webaudio/BaseAudioContext.h

Index: third_party/WebKit/Source/modules/webaudio/BaseAudioContext.h
diff --git a/third_party/WebKit/Source/modules/webaudio/BaseAudioContext.h b/third_party/WebKit/Source/modules/webaudio/BaseAudioContext.h
index 4b83dead10c4c39acab8a4fadda766e27e726fac..48ef8b6316f8d2d3f324adc0e173cc99b9544688 100644
--- a/third_party/WebKit/Source/modules/webaudio/BaseAudioContext.h
+++ b/third_party/WebKit/Source/modules/webaudio/BaseAudioContext.h
@@ -238,7 +238,7 @@ class MODULES_EXPORT BaseAudioContext : public EventTargetWithInlineData,
   void notifySourceNodeFinishedProcessing(AudioHandler*);
 
   // Called at the start of each render quantum.
-  void handlePreRenderTasks();
+  void handlePreRenderTasks(const AudioIOPosition& outputPosition);
 
   // Called at the end of each render quantum.
   void handlePostRenderTasks();
@@ -346,6 +346,8 @@ class MODULES_EXPORT BaseAudioContext : public EventTargetWithInlineData,
   // Returns whether the AudioContext is allowed to start rendering.
   bool isAllowedToStart() const;
 
+  AudioIOPosition outputPosition();
+
  private:
   friend class BaseAudioContextTest;
 
@@ -449,6 +451,7 @@ class MODULES_EXPORT BaseAudioContext : public EventTargetWithInlineData,
   enum { MaxNumberOfChannels = 32 };
 
   Optional<AutoplayStatus> m_autoplayStatus;
+  AudioIOPosition m_outputPosition;
 };
 
 }  // namespace blink