Remove tons of OILPAN.

sky/engine/core/animation/animatable/AnimatableUnknown.h

 /*
  * 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 35 matching lines @@
         return adoptRef(new AnimatableUnknown(value));
     }
     static PassRefPtr<AnimatableUnknown> create(CSSValueID value)
     {
         return adoptRef(new AnimatableUnknown(cssValuePool().createIdentifierValue(value)));
     }
 
     PassRefPtr<CSSValue> toCSSValue() const { return m_value; }
     CSSValueID toCSSValueID() const { return toCSSPrimitiveValue(m_value.get())->getValueID(); }
 
-    virtual void trace(Visitor* visitor) override
-    {
-        visitor->trace(m_value);
-        AnimatableValue::trace(visitor);
-    }
-
 protected:
     virtual PassRefPtr<AnimatableValue> interpolateTo(const AnimatableValue* value, double fraction) const override
     {
         return defaultInterpolateTo(this, value, fraction);
     }
 
     virtual bool usesDefaultInterpolationWith(const AnimatableValue*) const override { return true; }
 
 private:
     explicit AnimatableUnknown(PassRefPtr<CSSValue> value)
@@ skipping 11 matching lines @@
 
 inline bool AnimatableUnknown::equalTo(const AnimatableValue* value) const
 {
     const AnimatableUnknown* unknown = toAnimatableUnknown(value);
     return m_value == unknown->m_value || m_value->equals(*unknown->m_value);
 }
 
 } // namespace blink
 
 #endif // AnimatableUnknown_h