Oilpan: Remove most WillBe types from the code base

third_party/WebKit/Source/core/css/cssom/KeywordValue.cpp

 // 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.
 
 #include "core/css/cssom/KeywordValue.h"
 
 #include "bindings/core/v8/ExceptionState.h"
 #include "core/css/CSSCustomIdentValue.h"
 #include "core/css/parser/CSSParserString.h"
 #include "core/css/parser/CSSPropertyParser.h"
 
 namespace blink {
 
 KeywordValue* KeywordValue::create(const String& keyword, ExceptionState& exceptionState)
 {
     if (keyword.isEmpty()) {
         exceptionState.throwTypeError("KeywordValue does not support empty strings");
         return nullptr;
     }
     return new KeywordValue(keyword);
 }
 
 const String& KeywordValue::keywordValue() const
 {
     return m_keywordValue;
 }
 
-PassRefPtrWillBeRawPtr<CSSValue> KeywordValue::toCSSValue() const
+RawPtr<CSSValue> KeywordValue::toCSSValue() const
 {
     CSSParserString cssKeywordString;
     cssKeywordString.init(m_keywordValue);
     CSSValueID keywordID = cssValueKeywordID(cssKeywordString);
     if (keywordID == CSSValueID::CSSValueInvalid) {
         return CSSCustomIdentValue::create(m_keywordValue);
     }
     return cssValuePool().createIdentifierValue(keywordID);
 }
 
 } // namespace blink