Update IDL to 1847

modules/webaudio/AudioBufferSourceNode.idl

Index: modules/webaudio/AudioBufferSourceNode.idl
diff --git a/modules/webaudio/AudioBufferSourceNode.idl b/modules/webaudio/AudioBufferSourceNode.idl
index ab58774ead668fca7c5da8739217e573e73c3996..5ac1c0167d72157aa97220460a09ebe1ae5462c8 100644
--- a/modules/webaudio/AudioBufferSourceNode.idl
+++ b/modules/webaudio/AudioBufferSourceNode.idl
@@ -24,9 +24,10 @@
 
 // A cached (non-streamed), memory-resident audio source
 [
-    Conditional=WEB_AUDIO
+    Conditional=WEB_AUDIO,
+    StrictTypeChecking,
 ] interface AudioBufferSourceNode : AudioSourceNode {
-    [StrictTypeChecking, RaisesException=Setter] attribute AudioBuffer buffer;
+    [RaisesException=Setter] attribute AudioBuffer buffer;
 
     const unsigned short UNSCHEDULED_STATE = 0;
     const unsigned short SCHEDULED_STATE = 1;
@@ -38,16 +39,13 @@
     readonly attribute AudioParam gain;
     readonly attribute AudioParam playbackRate;
 
-    attribute boolean loop; // This is the proper attribute name from the specification.
-
+    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 stop(optional double when);
 
-    [DeprecateAs=WebAudioLooping, ImplementedAs=loop] attribute boolean looping; // This is an alias for the .loop attribute for backwards compatibility.
-
     [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);