Add [TypeChecking=Unrestricted] to Web Audio interfaces

Source/modules/webaudio/AudioContext.idl

 /*
  * Copyright (C) 2010, Google Inc. All rights reserved.
  * Copyright (C) 2011 Apple 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
@@ skipping 19 matching lines @@
 };
 
 [
     GarbageCollected,
     ActiveDOMObject,
     Conditional=WEB_AUDIO,
     Constructor,
     ConstructorCallWith=Document,
     NoInterfaceObject,
     RaisesException=Constructor,
+    TypeChecking=Unrestricted,
 ] interface AudioContext : EventTarget {
     // All rendered audio ultimately connects to destination, which represents the audio hardware.
     readonly attribute AudioDestinationNode destination;
 
     // All scheduled times are relative to this time in seconds.
     readonly attribute double currentTime;
 
     // All AudioNodes in the context run at this sample-rate (sample-frames per second).
     readonly attribute float sampleRate;
 
@@ skipping 36 matching lines @@
 
     // Close
     [MeasureAs=AudioContextClose, CallWith=ScriptState, ImplementedAs=closeContext] Promise close();
 
     // Pause/resume
     [MeasureAs=AudioContextSuspend, CallWith=ScriptState, ImplementedAs=suspendContext] Promise suspend();
     [MeasureAs=AudioContextResume, CallWith=ScriptState, ImplementedAs=resumeContext] Promise resume();
 
     attribute EventHandler onstatechange;
 };