Add foundation for removing AnimatableValues from StyleInterpolation

Source/core/animation/CSSValueAnimationType.cpp

Index: Source/core/animation/CSSValueAnimationType.cpp
diff --git a/Source/core/animation/CSSValueAnimationType.cpp b/Source/core/animation/CSSValueAnimationType.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..f503d035a730df2f7b3a8c581db175668e5fca8c
--- /dev/null
+++ b/Source/core/animation/CSSValueAnimationType.cpp
@@ -0,0 +1,27 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "config.h"
+#include "core/animation/CSSValueAnimationType.h"
+
+#include "core/css/resolver/StyleBuilder.h"
+
+namespace blink {
+
+PassOwnPtrWillBeRawPtr<FlipInterpolationPrimitive::Side> CSSValueAnimationType::maybeConvertSingleImpl(const CSSPropertySpecificKeyframe& keyframe, const StyleResolverState*, ConversionInvalidators&) const
+{
+    OwnPtrWillBeRawPtr<FlipInterpolationPrimitive::Side> result = FlipInterpolationPrimitive::Side::create();
+    result->interpolableValue = InterpolableList::create(0);
+    result->nonInterpolableValue = DefaultNonInterpolableValue::create(keyframe.value());
+    return result.release();
+}
+
+void CSSValueAnimationType::apply(const InterpolableValue&, const NonInterpolableValue* nonInterpolableValue, StyleResolverState& state) const
+{
+    StyleBuilder::applyProperty(m_property, state, toDefaultNonInterpolableValue(nonInterpolableValue)->cssValue());
+}
+
+DEFINE_NON_INTERPOLABLE_VALUE_TYPE(DefaultNonInterpolableValue);
+
+} // namespace blink