Roll IDLs forward.

third_party/WebCore/Modules/webaudio/AudioBufferSourceNode.idl

 /*
  * Copyright (C) 2010, 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:
  * 1.  Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 23 matching lines @@
     const unsigned short SCHEDULED_STATE = 1;
     const unsigned short PLAYING_STATE = 2;
     const unsigned short FINISHED_STATE = 3;
 
     readonly attribute unsigned short playbackState;
 
     readonly attribute AudioGain gain;
     readonly attribute AudioParam playbackRate;
 
     attribute boolean loop; // This is the proper attribute name from the specification.
-    attribute boolean looping; // This is an alias for the .loop attribute for backwards compatibility.
+
+    attribute double loopStart;
+    attribute double loopEnd;
 
     [V8MeasureAs=WebAudioStart] void start(in double when);
     [V8MeasureAs=WebAudioStart, ImplementedAs=startGrain] void start(in double when, in double grainOffset, in double grainDuration);
     void stop(in double when);
 
 #if defined(ENABLE_LEGACY_WEB_AUDIO) && ENABLE_LEGACY_WEB_AUDIO
-    [V8MeasureAs=LegacyWebAudioNoteOn] void noteOn(in double when);
-    [V8MeasureAs=LegacyWebAudioNoteOn] void noteGrainOn(in double when, in double grainOffset, in double grainDuration);
+    attribute boolean looping; // This is an alias for the .loop attribute for backwards compatibility.
+
+    [V8MeasureAs=LegacyWebAudio] void noteOn(in double when);
+    [V8MeasureAs=LegacyWebAudio] void noteGrainOn(in double when, in double grainOffset, in double grainDuration);
     void noteOff(in double when);
 #endif
 };