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

third_party/WebKit/Source/wtf/Forward.h

 /*
  *  Copyright (C) 2006, 2009, 2011 Apple Inc. All rights reserved.
  *
  *  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
@@ skipping 27 matching lines @@
 class ArrayBuffer;
 class ArrayBufferView;
 class ArrayPiece;
 class AtomicString;
 class CString;
 class Float32Array;
 class Float64Array;
 class Int8Array;
 class Int16Array;
 class Int32Array;
+class OrdinalNumber;
 class String;
 class StringBuilder;
 class StringImpl;
 class StringView;
 class Uint8Array;
 class Uint8ClampedArray;
 class Uint16Array;
 class Uint32Array;
 
 }  // namespace WTF
@@ skipping 16 matching lines @@
 using WTF::StringBuffer;
 using WTF::StringBuilder;
 using WTF::StringImpl;
 using WTF::StringView;
 using WTF::Uint8Array;
 using WTF::Uint8ClampedArray;
 using WTF::Uint16Array;
 using WTF::Uint32Array;
 
 #endif  // WTF_Forward_h