Update animation classes to use OVERRIDE / FINAL when needed

Source/core/animation/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 19 matching lines @@
 
 #ifndef AnimatableUnknown_h
 #define AnimatableUnknown_h
 
 #include "CSSValueKeywords.h"
 #include "core/animation/AnimatableValue.h"
 #include "core/css/CSSValuePool.h"
 
 namespace WebCore {
 
-class AnimatableUnknown : public AnimatableValue {
+class AnimatableUnknown FINAL : public AnimatableValue {
 public:
     virtual ~AnimatableUnknown() { }
 
     static PassRefPtr<AnimatableUnknown> create(PassRefPtr<CSSValue> value)
     {
         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(); }
 
 protected:
     virtual PassRefPtr<AnimatableValue> interpolateTo(const AnimatableValue* value, double fraction) const OVERRIDE
     {
         return defaultInterpolateTo(this, value, fraction);
     }
 
-    virtual bool usesDefaultInterpolationWith(const AnimatableValue*) const { return true; }
+    virtual bool usesDefaultInterpolationWith(const AnimatableValue*) const OVERRIDE { return true; }
 
 private:
     explicit AnimatableUnknown(PassRefPtr<CSSValue> value)
         : m_value(value)
     {
         ASSERT(m_value);
     }
     virtual AnimatableType type() const OVERRIDE { return TypeUnknown; }
     virtual bool equalTo(const AnimatableValue*) const OVERRIDE;
 
     const RefPtr<CSSValue> m_value;
 };
 
 DEFINE_ANIMATABLE_VALUE_TYPE_CASTS(AnimatableUnknown, isUnknown());
 
 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 WebCore
 
 #endif // AnimatableUnknown_h