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

Source/core/xml/XPathValue.h

 /*
  * Copyright 2005 Frerich Raabe <raabe@kde.org>
  * Copyright (C) 2006 Apple Computer, Inc.
  *
  * 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.
@@ skipping 10 matching lines @@
  * 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 XPathValue_h
 #define XPathValue_h
 
 #include "core/xml/XPathNodeSet.h"
-#include <wtf/text/WTFString.h>
+#include "wtf/text/WTFString.h"
 
 namespace WebCore {
 
     namespace XPath {
 
         class ValueData : public RefCounted<ValueData> {
         public:
             static PassRefPtr<ValueData> create() { return adoptRef(new ValueData); }
             static PassRefPtr<ValueData> create(const NodeSet& nodeSet) { return adoptRef(new ValueData(nodeSet)); }
             static PassRefPtr<ValueData> create(const String& string) { return adoptRef(new ValueData(string)); }
@@ skipping 51 matching lines @@
         inline Value::Value(bool value)
             : m_type(BooleanValue)
             , m_bool(value)
             , m_number(0)
         {
         }
     }
 }
 
 #endif // XPath_Value_H