Rearrange some includes for core/layout/svg/SVGText*

Source/core/layout/svg/SVGTextLayoutAttributesBuilder.h

 /*
  * Copyright (C) Research In Motion Limited 2010-2012. 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
  * 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 SVGTextLayoutAttributesBuilder_h
 #define SVGTextLayoutAttributesBuilder_h
 
 #include "core/layout/svg/SVGTextLayoutAttributes.h"
 #include "wtf/Vector.h"
+#include "wtf/unicode/Unicode.h"
 
 namespace blink {
 
 class LayoutBoxModelObject;
 class LayoutSVGInlineText;
 class LayoutSVGText;
 class SVGTextPositioningElement;
 
 // SVGTextLayoutAttributesBuilder performs the first layout phase for SVG text.
 //
@@ skipping 36 matching lines @@
 
 private:
     unsigned m_textLength;
     Vector<TextPosition> m_textPositions;
     SVGCharacterDataMap m_characterDataMap;
 };
 
 } // namespace blink
 
 #endif