Implement suspend/resume for AudioContext

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 57 matching lines @@
     DynamicsCompressorNode createDynamicsCompressor();
     AnalyserNode createAnalyser();
     [RaisesException] ScriptProcessorNode createScriptProcessor(optional unsigned long bufferSize, optional unsigned long numberOfInputChannels, optional unsigned long numberOfOutputChannels);
     OscillatorNode createOscillator();
     [RaisesException] PeriodicWave createPeriodicWave(Float32Array real, Float32Array imag);
 
     // Channel splitting and merging
     [RaisesException] ChannelSplitterNode createChannelSplitter(optional unsigned long numberOfOutputs);
     [RaisesException] ChannelMergerNode createChannelMerger(optional unsigned long numberOfInputs);
 
+    // Pause/resume
+    [ImplementedAs=suspendContext] void suspend();
+    [CallWith=ScriptState,ImplementedAs=resumeContext] Promise resume();
+
     // Offline rendering
     // void prepareOfflineBufferRendering(unsigned long numberOfChannels, unsigned long numberOfFrames, float sampleRate);
     attribute EventHandler oncomplete;
     void startRendering();
 };