Oilpan: fix build after r171843.

Source/core/css/parser/SizesAttributeParser.cpp

 // Copyright 2014 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 "config.h"
 #include "SizesAttributeParser.h"
 
 #include "MediaTypeNames.h"
 #include "core/css/MediaQueryEvaluator.h"
 #include "core/css/parser/MediaQueryTokenizer.h"
@@ skipping 54 matching lines @@
         } else if (token->blockType() == MediaQueryToken::BlockStart) {
             --blockLevel;
             if (!blockLevel)
                 break;
         }
 
         --token;
     }
 }
 
-bool SizesAttributeParser::mediaConditionMatches(PassRefPtr<MediaQuerySet> mediaCondition)
+bool SizesAttributeParser::mediaConditionMatches(PassRefPtrWillBeRawPtr<MediaQuerySet> mediaCondition)
 {
     // FIXME: How do I handle non-screen media types here?
     MediaQueryEvaluator mediaQueryEvaluator(MediaTypeNames::screen, *m_mediaValues);
     return mediaQueryEvaluator.eval(mediaCondition.get());
 }
 
 bool SizesAttributeParser::parseMediaConditionAndLength(TokenIterator startToken, TokenIterator endToken)
 {
     TokenIterator lengthTokenStart;
     TokenIterator lengthTokenEnd;
 
     reverseSkipIrrelevantTokens(endToken, startToken);
     lengthTokenEnd = endToken;
     reverseSkipUntilComponentStart(endToken, startToken);
     lengthTokenStart = endToken;
     unsigned length;
     if (!calculateLengthInPixels(lengthTokenStart, lengthTokenEnd, length))
         return false;
-    RefPtr<MediaQuerySet> mediaCondition = MediaQueryParser::parseMediaCondition(startToken, endToken);
+    RefPtrWillBeRawPtr<MediaQuerySet> mediaCondition = MediaQueryParser::parseMediaCondition(startToken, endToken);
     if (mediaCondition && mediaConditionMatches(mediaCondition)) {
         m_length = length;
         return true;
     }
     return false;
 }
 
 bool SizesAttributeParser::parse(Vector<MediaQueryToken>& tokens)
 {
     TokenIterator startToken = tokens.begin();
@@ skipping 20 matching lines @@
 }
 
 unsigned SizesAttributeParser::effectiveSizeDefaultValue()
 {
     // Returning the equivalent of "100%"
     return m_mediaValues->viewportWidth();
 }
 
 } // namespace