Implement BaseAudioContext

third_party/WebKit/Source/modules/modules.gypi

 {
   'includes': [
     '../core/core_generated.gypi',
     'modules_generated.gypi',
   ],
   'variables': {
     # Experimental hooks for embedder to provide extra IDL and source files.
     #
     # Note: this is not a supported API. If you rely on this, you will be broken
     # from time to time as the code generator changes in backward incompatible
@@ skipping 223 matching lines @@
       'webaudio/AudioBuffer.idl',
       'webaudio/AudioBufferCallback.idl',
       'webaudio/AudioBufferSourceNode.idl',
       'webaudio/AudioContext.idl',
       'webaudio/AudioDestinationNode.idl',
       'webaudio/AudioListener.idl',
       'webaudio/AudioNode.idl',
       'webaudio/AudioParam.idl',
       'webaudio/AudioProcessingEvent.idl',
       'webaudio/AudioSourceNode.idl',
+      'webaudio/BaseAudioContext.idl',
       'webaudio/BiquadFilterNode.idl',
       'webaudio/ChannelMergerNode.idl',
       'webaudio/ChannelSplitterNode.idl',
       'webaudio/ConvolverNode.idl',
       'webaudio/DelayNode.idl',
       'webaudio/DynamicsCompressorNode.idl',
       'webaudio/GainNode.idl',
       'webaudio/IIRFilterNode.idl',
       'webaudio/MediaElementAudioSourceNode.idl',
       'webaudio/MediaStreamAudioDestinationNode.idl',
@@ skipping 1767 matching lines @@
       'accessibility/testing/InternalsAccessibility.idl',
       'navigatorcontentutils/testing/InternalsNavigatorContentUtils.idl',
       'peerconnection/testing/InternalsRTCCertificate.idl',
       'serviceworkers/testing/InternalsServiceWorker.idl',
       'speech/testing/InternalsSpeechSynthesis.idl',
       'vibration/testing/InternalsVibration.idl',
       'webaudio/testing/InternalsWebAudio.idl',
     ],
   },
 }