| Index: third_party/WebKit/public/platform/WebMediaStream.h | 
| diff --git a/third_party/WebKit/public/platform/WebMediaStream.h b/third_party/WebKit/public/platform/WebMediaStream.h | 
| index 0b05ebeadfe303d9da37debd59dc008e349265c8..82067320f0b23e19b47bcbb3d931a1953fdbfca0 100644 | 
| --- a/third_party/WebKit/public/platform/WebMediaStream.h | 
| +++ b/third_party/WebKit/public/platform/WebMediaStream.h | 
| @@ -69,6 +69,12 @@ class WebMediaStream { | 
|  | 
| BLINK_PLATFORM_EXPORT void audioTracks(WebVector<WebMediaStreamTrack>&) const; | 
| BLINK_PLATFORM_EXPORT void videoTracks(WebVector<WebMediaStreamTrack>&) const; | 
| +  // If a track is not found with the specified id, the returned track's | 
| +  // |isNull| will return true. | 
| +  BLINK_PLATFORM_EXPORT WebMediaStreamTrack | 
| +  getAudioTrack(const WebString& trackId) const; | 
| +  BLINK_PLATFORM_EXPORT WebMediaStreamTrack | 
| +  getVideoTrack(const WebString& trackId) const; | 
|  | 
| BLINK_PLATFORM_EXPORT void addTrack(const WebMediaStreamTrack&); | 
| BLINK_PLATFORM_EXPORT void removeTrack(const WebMediaStreamTrack&); | 
|  |