Roll IDL to Dartium37 (r181268)

modules/webaudio/AudioBufferSourceNode.idl

Index: modules/webaudio/AudioBufferSourceNode.idl
diff --git a/modules/webaudio/AudioBufferSourceNode.idl b/modules/webaudio/AudioBufferSourceNode.idl
index 5ac1c0167d72157aa97220460a09ebe1ae5462c8..135f1ce1be273ee3c9ac9efddd065f37a5c1ee4b 100644
--- a/modules/webaudio/AudioBufferSourceNode.idl
+++ b/modules/webaudio/AudioBufferSourceNode.idl
@@ -25,30 +25,18 @@
 // A cached (non-streamed), memory-resident audio source
 [
     Conditional=WEB_AUDIO,
-    StrictTypeChecking,
+    TypeChecking=Interface|Nullable,
 ] interface AudioBufferSourceNode : AudioSourceNode {
     [RaisesException=Setter] attribute AudioBuffer buffer;
 
-    const unsigned short UNSCHEDULED_STATE = 0;
-    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 AudioParam gain;
     readonly attribute AudioParam playbackRate;
 
     attribute boolean loop;
     attribute double loopStart;
     attribute double loopEnd;
 
-    [RaisesException, MeasureAs=WebAudioStart] void start(optional double when, optional double grainOffset, optional double grainDuration);
+    [RaisesException] void start(optional double when, optional double grainOffset, optional double grainDuration);
     [RaisesException] void stop(optional double when);
 
-    [RaisesException, ImplementedAs=start, MeasureAs=LegacyWebAudio] void noteOn(double when);
-    [RaisesException, MeasureAs=LegacyWebAudio] void noteGrainOn(double when, double grainOffset, double grainDuration);
-    [RaisesException, ImplementedAs=stop] void noteOff(double when);
-
     attribute EventHandler onended;
 };