Revert of Move DOMArrayBuffer, DOMArrayBufferViews and DataView to the heap.

third_party/WebKit/Source/core/events/MessageEvent.cpp

 /*
  * Copyright (C) 2007 Henry Mason (hmason@mac.com)
  * Copyright (C) 2003, 2005, 2006, 2007, 2008 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 99 matching lines @@
 }
 
 MessageEvent::MessageEvent(Blob* data, const String& origin, const String& suborigin)
     : Event(EventTypeNames::message, false, false)
     , m_dataType(DataTypeBlob)
     , m_dataAsBlob(data)
     , m_origin(origin)
 {
 }
 
-MessageEvent::MessageEvent(DOMArrayBuffer* data, const String& origin, const String& suborigin)
+MessageEvent::MessageEvent(PassRefPtr<DOMArrayBuffer> data, const String& origin, const String& suborigin)
     : Event(EventTypeNames::message, false, false)
     , m_dataType(DataTypeArrayBuffer)
     , m_dataAsArrayBuffer(data)
     , m_origin(origin)
 {
 }
 
 MessageEvent::~MessageEvent()
 {
 }
@@ skipping 68 matching lines @@
 }
 
 void MessageEvent::entangleMessagePorts(ExecutionContext* context)
 {
     m_ports = MessagePort::entanglePorts(*context, m_channels.release());
 }
 
 DEFINE_TRACE(MessageEvent)
 {
     visitor->trace(m_dataAsBlob);
-    visitor->trace(m_dataAsArrayBuffer);
     visitor->trace(m_source);
     visitor->trace(m_ports);
     Event::trace(visitor);
 }
 
 v8::Local<v8::Object> MessageEvent::associateWithWrapper(v8::Isolate* isolate, const WrapperTypeInfo* wrapperType, v8::Local<v8::Object> wrapper)
 {
     wrapper = Event::associateWithWrapper(isolate, wrapperType, wrapper);
 
     // Ensures a wrapper is created for the data to return now so that V8 knows how
@@ skipping 10 matching lines @@
         break;
     case MessageEvent::DataTypeArrayBuffer:
         V8HiddenValue::setHiddenValue(ScriptState::current(isolate), wrapper, V8HiddenValue::arrayBufferData(isolate), toV8(dataAsArrayBuffer(), wrapper, isolate));
         break;
     }
 
     return wrapper;
 }
 
 } // namespace blink