Roll IDL to mutlivm@775.

third_party/WebCore/Modules/mediasource/SourceBuffer.idl

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 21 matching lines @@
 
     interface [
         Conditional=MEDIA_SOURCE,
         V8EnabledAtRuntime=mediaSource
     ] SourceBuffer {
 
         // Returns the time ranges buffered.
         readonly attribute TimeRanges buffered
             getter raises(DOMException);
 
+        // Applies an offset to media segment timestamps.
+        attribute double timestampOffset
+            setter raises(DOMException);
+
         // Append segment data.
         void append(in Uint8Array data) raises (DOMException);
 
         // Abort the current segment append sequence.
         void abort() raises (DOMException);
     };
 
 }