Revert of Move all RefPtr's to CSSValue to oilpan transition types

Source/core/css/CSSProperty.h

 /*
  * (C) 1999-2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2005, 2006 Apple Computer, Inc.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 35 matching lines @@
 
     uint16_t m_propertyID : 10;
     uint16_t m_isSetFromShorthand : 1;
     uint16_t m_indexInShorthandsVector : 2; // If this property was set as part of an ambiguous shorthand, gives the index in the shorthands vector.
     uint16_t m_important : 1;
     uint16_t m_implicit : 1; // Whether or not the property was set implicitly as the result of a shorthand.
     uint16_t m_inherited : 1;
 };
 
 class CSSProperty {
-    ALLOW_ONLY_INLINE_ALLOCATION();
 public:
     CSSProperty(CSSPropertyID propertyID, PassRefPtrWillBeRawPtr<CSSValue> value, bool important = false, bool isSetFromShorthand = false, int indexInShorthandsVector = 0, bool implicit = false)
         : m_metadata(propertyID, isSetFromShorthand, indexInShorthandsVector, important, implicit, isInheritedProperty(propertyID))
         , m_value(value)
     {
     }
 
     // FIXME: Remove this.
     CSSProperty(StylePropertyMetadata metadata, CSSValue* value)
         : m_metadata(metadata)
         , m_value(value)
     {
     }
 
     CSSPropertyID id() const { return static_cast<CSSPropertyID>(m_metadata.m_propertyID); }
     bool isSetFromShorthand() const { return m_metadata.m_isSetFromShorthand; };
     CSSPropertyID shorthandID() const { return m_metadata.shorthandID(); };
     bool isImportant() const { return m_metadata.m_important; }
 
     CSSValue* value() const { return m_value.get(); }
 
     void wrapValueInCommaSeparatedList();
 
     static CSSPropertyID resolveDirectionAwareProperty(CSSPropertyID, TextDirection, WritingMode);
     static bool isInheritedProperty(CSSPropertyID);
 
     const StylePropertyMetadata& metadata() const { return m_metadata; }
 
-    void trace(Visitor* visitor) { visitor->trace(m_value); }
-
 private:
     StylePropertyMetadata m_metadata;
-    RefPtrWillBeMember<CSSValue> m_value;
+    RefPtr<CSSValue> m_value;
 };
 
 inline CSSPropertyID prefixingVariantForPropertyId(CSSPropertyID propId)
 {
     if (!RuntimeEnabledFeatures::cssAnimationUnprefixedEnabled() && (propId >= CSSPropertyWebkitAnimation && propId <= CSSPropertyAnimationTimingFunction))
         return propId;
 
     CSSPropertyID propertyId = CSSPropertyInvalid;
     switch (propId) {
     case CSSPropertyAnimation:
@@ skipping 91 matching lines @@
 } // namespace WebCore
 
 namespace WTF {
 template <> struct VectorTraits<WebCore::CSSProperty> : VectorTraitsBase<WebCore::CSSProperty> {
     static const bool canInitializeWithMemset = true;
     static const bool canMoveWithMemcpy = true;
 };
 }
 
 #endif // CSSProperty_h