Remove lib/dom directory!

lib/dom/templates/html/dartium/cpp_callback_header.template

-// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-// WARNING: Do not edit - generated code.
-
-#ifndef Dart$(INTERFACE)_h
-#define Dart$(INTERFACE)_h
-
-#include "ActiveDOMCallback.h"
-#include "DartCallback.h"
-#include "DartDOMWrapper.h"
-#include "$(INTERFACE).h"
-
-namespace WebCore {
-
-class Dart$(INTERFACE) : public $(INTERFACE), public ActiveDOMCallback {
-public:
-    typedef $(INTERFACE) NativeType;
-
-    static PassRefPtr<NativeType> create(Dart_Handle object, Dart_Handle& exception)
-    {
-        return adoptRef(new Dart$(INTERFACE)(object, exception, DartUtilities::scriptExecutionContext()));
-    }
-
-    static PassRefPtr<NativeType> createWithNullCheck(Dart_Handle object, Dart_Handle& exception)
-    {
-        if (Dart_IsNull(object))
-            return 0;
-        return create(object, exception);
-    }
-$HANDLERS
-
-private:
-    Dart$(INTERFACE)(Dart_Handle object, Dart_Handle& exception, ScriptExecutionContext* context)
-        : ActiveDOMCallback(context)
-        , m_callback(object, exception)
-    {
-    }
-
-    DartCallback m_callback;
-};
-
-}
-
-#endif // Dart$(INTERFACE)_h