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

Source/core/css/StylePropertySet.cpp

Index: Source/core/css/StylePropertySet.cpp
diff --git a/Source/core/css/StylePropertySet.cpp b/Source/core/css/StylePropertySet.cpp
index 6e42fe2ee01c65e976c015784adc0c967c37e94c..c1e5893137ce023448a6eafc49d029ed8e6cedc3 100644
--- a/Source/core/css/StylePropertySet.cpp
+++ b/Source/core/css/StylePropertySet.cpp
@@ -319,7 +319,7 @@
     parser.parseDeclaration(this, styleDeclaration, 0, contextStyleSheet);
 }
 
-void MutableStylePropertySet::addParsedProperties(const WillBeHeapVector<CSSProperty, 256>& properties)
+void MutableStylePropertySet::addParsedProperties(const Vector<CSSProperty, 256>& properties)
 {
     m_propertyVector.reserveCapacity(m_propertyVector.size() + properties.size());
     for (unsigned i = 0; i < properties.size(); ++i)
@@ -419,7 +419,7 @@
     for (unsigned i = 0; i < length; ++i)
         toRemove.add(set[i]);
 
-    WillBeHeapVector<CSSProperty> newProperties;
+    Vector<CSSProperty> newProperties;
     newProperties.reserveInitialCapacity(m_propertyVector.size());
 
     unsigned size = m_propertyVector.size();
@@ -489,7 +489,7 @@
 
 PassRefPtr<MutableStylePropertySet> StylePropertySet::copyPropertiesInSet(const Vector<CSSPropertyID>& properties) const
 {
-    WillBeHeapVector<CSSProperty, 256> list;
+    Vector<CSSProperty, 256> list;
     list.reserveInitialCapacity(properties.size());
     for (unsigned i = 0; i < properties.size(); ++i) {
         RefPtrWillBeRawPtr<CSSValue> value = getPropertyCSSValue(properties[i]);