core/css: Include wtf files using "wtf/foo.h" form.

Source/core/css/CSSComputedStyleDeclaration.h

 /*
  * Copyright (C) 2004 Zack Rusin <zack@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2008, 2012 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser 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
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  * 02110-1301  USA
  */
 
 #ifndef CSSComputedStyleDeclaration_h
 #define CSSComputedStyleDeclaration_h
 
 #include "core/css/CSSStyleDeclaration.h"
 #include "core/rendering/style/RenderStyleConstants.h"
-#include <wtf/RefPtr.h>
-#include <wtf/text/WTFString.h>
+#include "wtf/RefPtr.h"
+#include "wtf/text/WTFString.h"
 
 namespace WebCore {
 
 class CSSPrimitiveValue;
 class CSSValueList;
 class Color;
 class MutableStylePropertySet;
 class Node;
 class RenderObject;
 class RenderStyle;
@@ skipping 76 matching lines @@
 
     RefPtr<Node> m_node;
     PseudoId m_pseudoElementSpecifier;
     bool m_allowVisitedStyle;
     unsigned m_refCount;
 };
 
 } // namespace WebCore
 
 #endif // CSSComputedStyleDeclaration_h