Move Animatable* hierarchy into new folder.

Source/core/animation/AnimatableImage.cpp

-/*
- * 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.
- */
-
-#include "config.h"
-#include "core/animation/AnimatableImage.h"
-
-#include "core/css/CSSImageValue.h"
-#include "core/rendering/style/StyleGeneratedImage.h"
-#include "wtf/MathExtras.h"
-
-namespace WebCore {
-
-// FIXME: Once cross-fade works on generated image types, remove this method.
-bool AnimatableImage::usesDefaultInterpolationWith(const AnimatableValue* value) const
-{
-    if (!m_value->isImageValue())
-        return true;
-    if (!toAnimatableImage(value)->toCSSValue()->isImageValue())
-        return true;
-    return false;
-}
-
-PassRefPtrWillBeRawPtr<AnimatableValue> AnimatableImage::interpolateTo(const AnimatableValue* value, double fraction) const
-{
-    if (fraction <= 0 || fraction >= 1 || usesDefaultInterpolationWith(value))
-        return defaultInterpolateTo(this, value, fraction);
-
-    CSSValue* fromValue = toCSSValue();
-    CSSValue* toValue = toAnimatableImage(value)->toCSSValue();
-
-    RefPtrWillBeRawPtr<CSSCrossfadeValue> crossfadeValue = CSSCrossfadeValue::create(fromValue, toValue);
-    crossfadeValue->setPercentage(CSSPrimitiveValue::create(fraction, CSSPrimitiveValue::CSS_NUMBER));
-    return create(crossfadeValue);
-}
-
-bool AnimatableImage::equalTo(const AnimatableValue* value) const
-{
-    return m_value->equals(*toAnimatableImage(value)->m_value.get());
-}
-
-}