Stop including main header twice in generated implementation code

Source/bindings/tests/results/V8TestNode.cpp

 /*
     This file is part of the Blink open source project.
     This file has been auto-generated by CodeGeneratorV8.pm. DO NOT MODIFY!
 
     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., 59 Temple Place - Suite 330,
     Boston, MA 02111-1307, USA.
 */
 
 #include "config.h"
 #include "V8TestNode.h"
 
 #include "RuntimeEnabledFeatures.h"
 #include "V8Node.h"
-#include "V8TestNode.h"
 #include "bindings/v8/ScriptController.h"
 #include "bindings/v8/V8Binding.h"
 #include "bindings/v8/V8DOMWrapper.h"
 #include "core/dom/ContextFeatures.h"
 #include "core/page/Frame.h"
 #include "wtf/UnusedParam.h"
 
 #if ENABLE(BINDING_INTEGRITY)
 #if defined(OS_WIN)
 #pragma warning(disable: 4483)
@@ skipping 139 matching lines @@
     installPerContextProperties(wrapper, impl.get(), isolate);
     V8DOMWrapper::associateObjectWithWrapper(impl, &info, wrapper, isolate, hasDependentLifetime ? WrapperConfiguration::Dependent : WrapperConfiguration::Independent);
     return wrapper;
 }
 void V8TestNode::derefObject(void* object)
 {
     static_cast<TestNode*>(object)->deref();
 }
 
 } // namespace WebCore