Revert of Apply AllowCrossThreadAccess() in the callers of createCrossThreadTask()

third_party/WebKit/Source/modules/webaudio/ScriptProcessorNode.cpp

 /*
  * Copyright (C) 2010, 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 147 matching lines @@
         // The audio thread can't block on this lock, so we call tryLock() instead.
         MutexTryLocker tryLocker(m_processEventLock);
         if (!tryLocker.locked()) {
             // We're late in handling the previous request. The main thread must be very busy.
             // The best we can do is clear out the buffer ourself here.
             outputBuffer->zero();
         } else if (context()->getExecutionContext()) {
             // Fire the event on the main thread with the appropriate buffer
             // index.
             context()->getExecutionContext()->postTask(BLINK_FROM_HERE,
-                createCrossThreadTask(&ScriptProcessorHandler::fireProcessEvent, AllowCrossThreadAccess(this), m_doubleBufferIndex));
+                createCrossThreadTask(&ScriptProcessorHandler::fireProcessEvent, this, m_doubleBufferIndex));
         }
 
         swapBuffers();
     }
 }
 
 void ScriptProcessorHandler::fireProcessEvent(unsigned doubleBufferIndex)
 {
     ASSERT(isMainThread());
 
@@ skipping 125 matching lines @@
     // If |onaudioprocess| event handler is defined, the node should not be
     // GCed even if it is out of scope.
     if (hasEventListeners(EventTypeNames::audioprocess))
         return true;
 
     return false;
 }
 
 } // namespace blink