Move Animatable* hierarchy into new folder.

Source/core/animation/AnimatableShadow.h

Index: Source/core/animation/AnimatableShadow.h
diff --git a/Source/core/animation/AnimatableShadow.h b/Source/core/animation/AnimatableShadow.h
deleted file mode 100644
index 80a7cf518862038baee30b81f0215ff2681f54df..0000000000000000000000000000000000000000
--- a/Source/core/animation/AnimatableShadow.h
+++ /dev/null
@@ -1,68 +0,0 @@
-/*
- * 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
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- *     * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef AnimatableShadow_h
-#define AnimatableShadow_h
-
-#include "core/animation/AnimatableValue.h"
-#include "core/rendering/style/ShadowList.h"
-
-namespace WebCore {
-
-class AnimatableShadow FINAL : public AnimatableValue {
-public:
-    virtual ~AnimatableShadow() { }
-    static PassRefPtrWillBeRawPtr<AnimatableShadow> create(PassRefPtr<ShadowList> shadowList)
-    {
-        return adoptRefWillBeNoop(new AnimatableShadow(shadowList));
-    }
-    ShadowList* shadowList() const { return m_shadowList.get(); }
-
-    virtual void trace(Visitor* visitor) OVERRIDE { AnimatableValue::trace(visitor); }
-
-protected:
-    virtual PassRefPtrWillBeRawPtr<AnimatableValue> interpolateTo(const AnimatableValue*, double fraction) const OVERRIDE;
-
-private:
-    explicit AnimatableShadow(PassRefPtr<ShadowList> shadowList)
-        : m_shadowList(shadowList)
-    {
-    }
-    virtual AnimatableType type() const OVERRIDE { return TypeShadow; }
-    virtual bool equalTo(const AnimatableValue*) const OVERRIDE;
-
-    const RefPtr<ShadowList> m_shadowList;
-};
-
-DEFINE_ANIMATABLE_VALUE_TYPE_CASTS(AnimatableShadow, isShadow());
-
-} // namespace WebCore
-
-#endif // AnimatableShadow_h