Add foundation for removing AnimatableValues from StyleInterpolation

Source/core/animation/DefaultAnimationType.cpp

Index: Source/core/animation/DefaultAnimationType.cpp
diff --git a/Source/core/animation/DefaultAnimationType.cpp b/Source/core/animation/DefaultAnimationType.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..cdfcd839605cb60f9511b11ea220f279e2df53cb
--- /dev/null
+++ b/Source/core/animation/DefaultAnimationType.cpp
@@ -0,0 +1,32 @@
+// 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/DefaultAnimationType.h"
+
+#include "core/css/resolver/StyleBuilder.h"
+
+namespace blink {
+
+bool DefaultAnimationType::maybeConvertSingle(
+    const CSSPropertySpecificKeyframe& keyframe,
+    const StyleResolverState*,
+    RefPtrWillBeRawPtr<InterpolationIsInvalid>& resultIsInvalid,
+    OwnPtrWillBeRawPtr<InterpolableValue>& resultInterpolableValue,
+    RefPtrWillBeRawPtr<NonInterpolableValue>& resultNonInterpolableValue) const
+{
+    resultIsInvalid = nullptr;
+    resultInterpolableValue = InterpolableList::create(0);
+    resultNonInterpolableValue = DefaultNonInterpolableValue::create(keyframe.value());
+    return true;
+}
+
+void DefaultAnimationType::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