Rewrite references to "wtf/" to "platform/wtf/" in core/css and core/style.

third_party/WebKit/Source/core/css/CSSStringValue.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CSSStringValue_h
 #define CSSStringValue_h
 
 #include "core/css/CSSValue.h"
-#include "wtf/text/WTFString.h"
+#include "platform/wtf/text/WTFString.h"
 
 namespace blink {
 
 class CSSStringValue : public CSSValue {
  public:
   static CSSStringValue* Create(const String& str) {
     return new CSSStringValue(str);
   }
 
   String Value() const { return string_; }
@@ skipping 10 matching lines @@
   CSSStringValue(const String&);
 
   String string_;
 };
 
 DEFINE_CSS_VALUE_TYPE_CASTS(CSSStringValue, IsStringValue());
 
 }  // namespace blink
 
 #endif  // CSSStringValue_h