Implementation of 'AudioContext.getOutputTimestamp' method

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

Index: third_party/WebKit/Source/modules/webaudio/AbstractAudioContext.h
diff --git a/third_party/WebKit/Source/modules/webaudio/AbstractAudioContext.h b/third_party/WebKit/Source/modules/webaudio/AbstractAudioContext.h
index 942b7ff67613c808866669403c498570b0da65a9..13614e02e08f18f2bcf9a38b7165b6d2d15bcf2b 100644
--- a/third_party/WebKit/Source/modules/webaudio/AbstractAudioContext.h
+++ b/third_party/WebKit/Source/modules/webaudio/AbstractAudioContext.h
@@ -267,6 +267,12 @@ public:
     // a histogram.
     void recordUserGestureState();
 
+    // Gets the audio timestamp of the currently audiable signal.
+    void getOutputTimestamp(AudioTimestamp&);
+
+    // Output timestamp to be set from destination handler.
+    void setWebAudioTimestamp(const WebAudioTimestamp&);
+
 protected:
     explicit AbstractAudioContext(Document*);
     AbstractAudioContext(Document*, unsigned numberOfChannels, size_t numberOfFrames, float sampleRate);
@@ -375,6 +381,9 @@ private:
     // This is considering 32 is large enough for multiple channels audio.
     // It is somewhat arbitrary and could be increased if necessary.
     enum { MaxNumberOfChannels = 32 };
+
+    // Output audio stream timestamp.
+    WebAudioTimestamp m_outputTimestamp;
 };
 
 } // namespace blink