Delete unused AnimatableValue code

third_party/WebKit/Source/core/animation/animatable/AnimatableShadow.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 21 matching lines @@
 #define AnimatableShadow_h
 
 #include "core/animation/animatable/AnimatableValue.h"
 #include "core/style/ShadowList.h"
 
 namespace blink {
 
 class AnimatableShadow final : public AnimatableValue {
  public:
   ~AnimatableShadow() override {}
-  static PassRefPtr<AnimatableShadow> create(PassRefPtr<ShadowList> shadowList,
-                                             const Color& currentColor) {
-    return adoptRef(new AnimatableShadow(std::move(shadowList), currentColor));
+  static PassRefPtr<AnimatableShadow> create(
+      PassRefPtr<ShadowList> shadowList) {
+    return adoptRef(new AnimatableShadow(std::move(shadowList)));
   }
-  ShadowList* getShadowList() const { return m_shadowList.get(); }
-
- protected:
-  PassRefPtr<AnimatableValue> interpolateTo(const AnimatableValue*,
-                                            double fraction) const override;
-  bool usesDefaultInterpolationWith(const AnimatableValue*) const override;
 
  private:
-  explicit AnimatableShadow(PassRefPtr<ShadowList> shadowList,
-                            const Color& currentColor)
-      : m_shadowList(shadowList), m_currentColor(currentColor) {}
+  explicit AnimatableShadow(PassRefPtr<ShadowList> shadowList)
+      : m_shadowList(shadowList) {}
   AnimatableType type() const override { return TypeShadow; }
   bool equalTo(const AnimatableValue*) const override;
 
   const RefPtr<ShadowList> m_shadowList;
-  const Color m_currentColor;
 };
 
 DEFINE_ANIMATABLE_VALUE_TYPE_CASTS(AnimatableShadow, isShadow());
 
 }  // namespace blink
 
 #endif  // AnimatableShadow_h