Move Animatable* hierarchy into new folder.

Source/core/animation/AnimatableLengthSize.h

Index: Source/core/animation/AnimatableLengthSize.h
diff --git a/Source/core/animation/AnimatableLengthSize.h b/Source/core/animation/AnimatableLengthSize.h
deleted file mode 100644
index a572468e18e9b0170d4ab8ebd9d218a67bc162ee..0000000000000000000000000000000000000000
--- a/Source/core/animation/AnimatableLengthSize.h
+++ /dev/null
@@ -1,70 +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 AnimatableLengthSize_h
-#define AnimatableLengthSize_h
-
-#include "core/animation/AnimatableValue.h"
-
-namespace WebCore {
-
-class AnimatableLengthSize FINAL : public AnimatableValue {
-public:
-    virtual ~AnimatableLengthSize() { }
-    static PassRefPtrWillBeRawPtr<AnimatableLengthSize> create(PassRefPtrWillBeRawPtr<AnimatableValue> width, PassRefPtrWillBeRawPtr<AnimatableValue> height)
-    {
-        return adoptRefWillBeNoop(new AnimatableLengthSize(width, height));
-    }
-    const AnimatableValue* width() const { return m_width.get(); }
-    const AnimatableValue* height() const { return m_height.get(); }
-
-    virtual void trace(Visitor*) OVERRIDE;
-
-protected:
-    virtual PassRefPtrWillBeRawPtr<AnimatableValue> interpolateTo(const AnimatableValue*, double fraction) const OVERRIDE;
-
-private:
-    AnimatableLengthSize(PassRefPtrWillBeRawPtr<AnimatableValue> width, PassRefPtrWillBeRawPtr<AnimatableValue> height)
-        : m_width(width)
-        , m_height(height)
-    {
-    }
-    virtual AnimatableType type() const OVERRIDE { return TypeLengthSize; }
-    virtual bool equalTo(const AnimatableValue*) const OVERRIDE;
-
-    RefPtrWillBeMember<AnimatableValue> m_width;
-    RefPtrWillBeMember<AnimatableValue> m_height;
-};
-
-DEFINE_ANIMATABLE_VALUE_TYPE_CASTS(AnimatableLengthSize, isLengthSize());
-
-} // namespace WebCore
-
-#endif // AnimatableLengthSize_h