Extract a DOMWindow interface from LocalDOMWindow and use it in the idl.

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 117 matching lines @@
 
 PassRefPtrWillBeRawPtr<MessageEvent> MessageEvent::create(const AtomicString& type, const MessageEventInit& initializer, ExceptionState& exceptionState)
 {
     if (initializer.source.get() && !isValidSource(initializer.source.get())) {
         exceptionState.throwTypeError("The optional 'source' property is neither a Window nor MessagePort.");
         return nullptr;
     }
     return adoptRefWillBeNoop(new MessageEvent(type, initializer));
 }
 
-void MessageEvent::initMessageEvent(const AtomicString& type, bool canBubble, bool cancelable, const String& origin, const String& lastEventId, LocalDOMWindow* source, PassOwnPtrWillBeRawPtr<MessagePortArray> ports)
+void MessageEvent::initMessageEvent(const AtomicString& type, bool canBubble, bool cancelable, const String& origin, const String& lastEventId, DOMWindow* source, PassOwnPtrWillBeRawPtr<MessagePortArray> ports)
 {
     if (dispatched())
         return;
 
     initEvent(type, canBubble, cancelable);
 
     m_dataType = DataTypeScriptValue;
     m_origin = origin;
     m_lastEventId = lastEventId;
     m_source = source;
     m_ports = ports;
 }
 
-void MessageEvent::initMessageEvent(const AtomicString& type, bool canBubble, bool cancelable, PassRefPtr<SerializedScriptValue> data, const String& origin, const String& lastEventId, LocalDOMWindow* source, PassOwnPtrWillBeRawPtr<MessagePortArray> ports)
+void MessageEvent::initMessageEvent(const AtomicString& type, bool canBubble, bool cancelable, PassRefPtr<SerializedScriptValue> data, const String& origin, const String& lastEventId, DOMWindow* source, PassOwnPtrWillBeRawPtr<MessagePortArray> ports)
 {
     if (dispatched())
         return;
 
     initEvent(type, canBubble, cancelable);
 
     m_dataType = DataTypeSerializedScriptValue;
     m_dataAsSerializedScriptValue = data;
     m_origin = origin;
     m_lastEventId = lastEventId;
@@ skipping 42 matching lines @@
         break;
     case MessageEvent::DataTypeArrayBuffer:
         V8HiddenValue::setHiddenValue(isolate, wrapper, V8HiddenValue::arrayBufferData(isolate), toV8(dataAsArrayBuffer(), wrapper, isolate));
         break;
     }
 
     return wrapper;
 }
 
 } // namespace blink