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

third_party/WebKit/Source/core/css/CSSFontFamilyValue.cpp

 // Copyright 2016 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.
 
 #include "core/css/CSSFontFamilyValue.h"
 
 #include "core/css/CSSMarkup.h"
 #include "core/css/CSSValuePool.h"
-#include "wtf/text/WTFString.h"
+#include "platform/wtf/text/WTFString.h"
 
 namespace blink {
 
 CSSFontFamilyValue* CSSFontFamilyValue::Create(const String& family_name) {
   if (family_name.IsNull())
     return new CSSFontFamilyValue(family_name);
   CSSValuePool::FontFamilyValueCache::AddResult entry =
       CssValuePool().GetFontFamilyCacheEntry(family_name);
   if (!entry.stored_value->value)
     entry.stored_value->value = new CSSFontFamilyValue(family_name);
   return entry.stored_value->value;
 }
 
 CSSFontFamilyValue::CSSFontFamilyValue(const String& str)
     : CSSValue(kFontFamilyClass), string_(str) {}
 
 String CSSFontFamilyValue::CustomCSSText() const {
   return SerializeFontFamily(string_);
 }
 
 DEFINE_TRACE_AFTER_DISPATCH(CSSFontFamilyValue) {
   CSSValue::TraceAfterDispatch(visitor);
 }
 
 }  // namespace blink