Oilpan: Unship Oilpan from CSSValues

Source/core/css/CSSUnsetValue.h

 // 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.
 
 #ifndef CSSUnsetValue_h
 #define CSSUnsetValue_h
 
 #include "core/css/CSSValue.h"
 #include "wtf/PassRefPtr.h"
 
 namespace blink {
 
 class CSSUnsetValue : public CSSValue {
 public:
-    static PassRefPtrWillBeRawPtr<CSSUnsetValue> create()
+    static PassRefPtr<CSSUnsetValue> create()
     {
-        return adoptRefWillBeNoop(new CSSUnsetValue);
+        return adoptRef(new CSSUnsetValue);
     }
 
     String customCSSText() const;
 
     bool equals(const CSSUnsetValue&) const { return true; }
 
-    DEFINE_INLINE_TRACE_AFTER_DISPATCH() { CSSValue::traceAfterDispatch(visitor); }
-
 private:
     CSSUnsetValue()
         : CSSValue(UnsetClass)
     {
     }
 };
 
 DEFINE_CSS_VALUE_TYPE_CASTS(CSSUnsetValue, isUnsetValue());
 
 } // namespace blink
 
 #endif // CSSUnsetValue_h