Fix <dialog> centering

Source/WebCore/rendering/RenderDialog.h

Index: Source/WebCore/rendering/RenderDialog.h
diff --git a/Source/WebCore/rendering/RenderDialog.h b/Source/WebCore/rendering/RenderDialog.h
deleted file mode 100644
index a672c06b8752cd041b3d747f82d028edf4ea0568..0000000000000000000000000000000000000000
--- a/Source/WebCore/rendering/RenderDialog.h
+++ /dev/null
@@ -1,55 +0,0 @@
-/*
- * Copyright (C) 2012 Google 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
- *     notice, this list of conditions and the following disclaimer in the
- *     documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef RenderDialog_h
-#define RenderDialog_h
-
-#if ENABLE(DIALOG_ELEMENT)
-#include "RenderBlock.h"
-#include "RenderWidget.h"
-
-namespace WebCore {
-
-class HTMLDialogElement;
-
-class RenderDialog : public RenderBlock {
-public:
-    explicit RenderDialog(Element* element)
-        : RenderBlock(element)
-    { }
-
-    virtual ~RenderDialog() { }
-    virtual void layout() OVERRIDE;
-
-private:
-    virtual const char* renderName() const { return "RenderDialog"; }
-    virtual bool isDialog() const OVERRIDE { return true; }
-};
-
-} // namespace WebCore
-
-#endif
-
-#endif // RenderDialog_h