Fix virtual/override/final usage in Source/core/{animation,css,style}/.

Source/core/animation/animatable/AnimatableLengthBoxAndBool.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 AnimatableLengthBoxAndBool_h
 #define AnimatableLengthBoxAndBool_h
 
 #include "core/animation/animatable/AnimatableValue.h"
 
 namespace blink {
 
 class AnimatableLengthBoxAndBool final : public AnimatableValue {
 public:
-    virtual ~AnimatableLengthBoxAndBool() { }
+    ~AnimatableLengthBoxAndBool() override { }
     static PassRefPtrWillBeRawPtr<AnimatableLengthBoxAndBool> create(PassRefPtrWillBeRawPtr<AnimatableValue> box, bool flag)
     {
         return adoptRefWillBeNoop(new AnimatableLengthBoxAndBool(box, flag));
     }
     const AnimatableValue* box() const { return m_box.get(); }
     bool flag() const { return m_flag; }
 
     DECLARE_VIRTUAL_TRACE();
 
 protected:
-    virtual PassRefPtrWillBeRawPtr<AnimatableValue> interpolateTo(const AnimatableValue*, double fraction) const override;
-    virtual bool usesDefaultInterpolationWith(const AnimatableValue*) const override;
+    PassRefPtrWillBeRawPtr<AnimatableValue> interpolateTo(const AnimatableValue*, double fraction) const override;
+    bool usesDefaultInterpolationWith(const AnimatableValue*) const override;
 
 private:
     AnimatableLengthBoxAndBool(PassRefPtrWillBeRawPtr<AnimatableValue> box, bool flag)
         : m_box(box)
         , m_flag(flag)
     {
     }
-    virtual AnimatableType type() const override { return TypeLengthBoxAndBool; }
-    virtual bool equalTo(const AnimatableValue*) const override;
+    AnimatableType type() const override { return TypeLengthBoxAndBool; }
+    bool equalTo(const AnimatableValue*) const override;
 
     RefPtrWillBeMember<AnimatableValue> m_box;
     bool m_flag;
 };
 
 DEFINE_ANIMATABLE_VALUE_TYPE_CASTS(AnimatableLengthBoxAndBool, isLengthBoxAndBool());
 
 } // namespace blink
 
 #endif // AnimatableLengthBoxAndBool_h