| Index: third_party/WebKit/public/platform/WebSourceBuffer.h | 
| diff --git a/third_party/WebKit/public/platform/WebSourceBuffer.h b/third_party/WebKit/public/platform/WebSourceBuffer.h | 
| index b577cfc7a32d4a91b49c96d70b8c92d546cfb9f3..b1270d80b563a6200288f24076e497e2c1b76d67 100644 | 
| --- a/third_party/WebKit/public/platform/WebSourceBuffer.h | 
| +++ b/third_party/WebKit/public/platform/WebSourceBuffer.h | 
| @@ -56,6 +56,10 @@ public: | 
| virtual bool setMode(AppendMode) = 0; | 
| virtual WebTimeRanges buffered() = 0; | 
|  | 
| +    // Returns the highest buffered presentation timestamp of all buffered coded | 
| +    // frames, or 0 if nothing is buffered. | 
| +    virtual double highestPresentationTimestamp() = 0; | 
| + | 
| // Run coded frame eviction/garbage collection algorithm. | 
| // |currentPlaybackTime| is HTMLMediaElement::currentTime. The algorithm | 
| // will try to preserve data around current playback position. | 
|  |