Oilpan: Change references to MutableStylePropertySet to transition types.

Source/core/css/FontFace.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 83 matching lines @@
         , m_resolver(ScriptPromiseResolver::create(context))
     { }
     ScriptState* m_scriptState;
     RefPtr<ScriptPromiseResolver> m_resolver;
 };
 
 static PassRefPtrWillBeRawPtr<CSSValue> parseCSSValue(const Document* document, const String& s, CSSPropertyID propertyID)
 {
     if (s.isEmpty())
         return nullptr;
-    RefPtr<MutableStylePropertySet> parsedStyle = MutableStylePropertySet::create();
+    RefPtrWillBeRawPtr<MutableStylePropertySet> parsedStyle = MutableStylePropertySet::create();
     BisonCSSParser::parseValue(parsedStyle.get(), propertyID, s, true, *document);
     return parsedStyle->getPropertyCSSValue(propertyID);
 }
 
 static bool initFontFace(FontFace* fontFace, ExecutionContext* context, const AtomicString& family, const Dictionary& descriptors, ExceptionState& exceptionState)
 {
     fontFace->setFamily(context, family, exceptionState);
     if (exceptionState.hadException())
         return false;
 
@@ skipping 482 matching lines @@
     visitor->trace(m_featureSettings);
     visitor->trace(m_error);
 }
 
 bool FontFace::hadBlankText() const
 {
     return m_cssFontFace->hadBlankText();
 }
 
 } // namespace WebCore