Move most of the [Pass]RefPtr's of CSSPrimitiveValue to our transition types.

Source/core/css/CSSBorderImageSliceValue.cpp

 /*
  * Copyright (C) 2011 Apple 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 12 matching lines @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "core/css/CSSBorderImageSliceValue.h"
 
 #include "wtf/text/WTFString.h"
 
 namespace WebCore {
 
-CSSBorderImageSliceValue::CSSBorderImageSliceValue(PassRefPtr<CSSPrimitiveValue> slices, bool fill)
+CSSBorderImageSliceValue::CSSBorderImageSliceValue(PassRefPtrWillBeRawPtr<CSSPrimitiveValue> slices, bool fill)
     : CSSValue(BorderImageSliceClass)
     , m_slices(slices)
     , m_fill(fill)
 {
 }
 
 String CSSBorderImageSliceValue::customCSSText() const
 {
     // Dump the slices first.
     String text = m_slices->cssText();
 
     // Now the fill keywords if it is present.
     if (m_fill)
         return text + " fill";
     return text;
 }
 
 bool CSSBorderImageSliceValue::equals(const CSSBorderImageSliceValue& other) const
 {
     return m_fill == other.m_fill && compareCSSValuePtr(m_slices, other.m_slices);
 }
 
 void CSSBorderImageSliceValue::traceAfterDispatch(Visitor* visitor)
 {
+    visitor->trace(m_slices);
     CSSValue::traceAfterDispatch(visitor);
 }
 
 } // namespace WebCore