Remove unused AnimatableValue types

third_party/WebKit/Source/core/animation/animatable/AnimatableLengthPoint3D.h

-/*
- * Copyright (C) 2014 Google Inc. All rights reserved.
- *
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- * modification, are permitted provided that the following conditions are
- * met:
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- *     * Redistributions of source code must retain the above copyright
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- *     * Redistributions in binary form must reproduce the above
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-
-#ifndef AnimatableLengthPoint3D_h
-#define AnimatableLengthPoint3D_h
-
-#include "core/animation/animatable/AnimatableValue.h"
-
-namespace blink {
-
-class AnimatableLengthPoint3D final : public AnimatableValue {
- public:
-  ~AnimatableLengthPoint3D() override {}
-  static PassRefPtr<AnimatableLengthPoint3D> Create(
-      PassRefPtr<AnimatableValue> x,
-      PassRefPtr<AnimatableValue> y,
-      PassRefPtr<AnimatableValue> z) {
-    return AdoptRef(
-        new AnimatableLengthPoint3D(std::move(x), std::move(y), std::move(z)));
-  }
-
- private:
-  AnimatableLengthPoint3D(PassRefPtr<AnimatableValue> x,
-                          PassRefPtr<AnimatableValue> y,
-                          PassRefPtr<AnimatableValue> z)
-      : x_(std::move(x)), y_(std::move(y)), z_(std::move(z)) {}
-  AnimatableType GetType() const override { return kTypeLengthPoint3D; }
-  bool EqualTo(const AnimatableValue*) const override;
-
-  RefPtr<AnimatableValue> x_;
-  RefPtr<AnimatableValue> y_;
-  RefPtr<AnimatableValue> z_;
-};
-
-DEFINE_ANIMATABLE_VALUE_TYPE_CASTS(AnimatableLengthPoint3D, IsLengthPoint3D());
-
-}  // namespace blink
-
-#endif  // AnimatableLengthPoint3D_h