Split "Online" and "Offline" AudioContext processing

Source/modules/webaudio/DefaultAudioDestinationNode.cpp

 /*
  * Copyright (C) 2011, Google 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 123 matching lines @@
     if (!exceptionState.hadException() && this->channelCount() != oldChannelCount && isInitialized()) {
         // Re-create destination.
         m_destination->stop();
         createDestination();
         m_destination->start();
     }
 }
 
 // ----------------------------------------------------------------
 
-DefaultAudioDestinationNode::DefaultAudioDestinationNode(AudioContext& context)
+DefaultAudioDestinationNode::DefaultAudioDestinationNode(AbstractAudioContext& context)
     : AudioDestinationNode(context)
 {
     setHandler(DefaultAudioDestinationHandler::create(*this));
 }
 
-DefaultAudioDestinationNode* DefaultAudioDestinationNode::create(AudioContext* context)
+DefaultAudioDestinationNode* DefaultAudioDestinationNode::create(AbstractAudioContext* context)
 {
     return new DefaultAudioDestinationNode(*context);
 }
 
 } // namespace blink
 
 #endif // ENABLE(WEB_AUDIO)