Avoid to include IDL-generated headers from EventTarget.h and Node.h

third_party/WebKit/Source/core/dom/Node.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004-2011, 2014 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved.
  * (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  *
  */
 
 #ifndef Node_h
 #define Node_h
 
 #include "bindings/core/v8/ExceptionState.h"
-#include "bindings/core/v8/NodeOrString.h"
 #include "bindings/core/v8/TraceWrapperMember.h"
 #include "core/CoreExport.h"
 #include "core/dom/MutationObserver.h"
 #include "core/dom/SimulatedClickOptions.h"
 #include "core/dom/TreeScope.h"
 #include "core/editing/EditingBoundary.h"
 #include "core/events/EventTarget.h"
 #include "core/style/ComputedStyleConstants.h"
 #include "platform/geometry/LayoutRect.h"
 
 // This needs to be here because Element.cpp also depends on it.
 #define DUMP_NODE_STATISTICS 0
 
 namespace blink {
 
 class ContainerNode;
 class Document;
 class Element;
 class ElementShadow;
 class Event;
 class ExceptionState;
 class GetRootNodeOptions;
 class HTMLQualifiedName;
 class HTMLSlotElement;
 class IntRect;
 class EventDispatchHandlingState;
 class NodeList;
 class NodeListsNodeData;
+class NodeOrString;
 class NodeRareData;
 class QualifiedName;
 class RegisteredEventListener;
 class LayoutBox;
 class LayoutBoxModelObject;
 class LayoutObject;
 class ComputedStyle;
 class SVGQualifiedName;
 class ShadowRoot;
 template <typename NodeType>
@@ skipping 943 matching lines @@
 }  // namespace blink
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 void showNode(const blink::Node*);
 void showTree(const blink::Node*);
 void showNodePath(const blink::Node*);
 #endif
 
 #endif  // Node_h