Rename animatable to interpolable in CSSProperties.in

Source/core/animation/css/CSSAnimatableValueFactory.cpp

Index: Source/core/animation/css/CSSAnimatableValueFactory.cpp
diff --git a/Source/core/animation/css/CSSAnimatableValueFactory.cpp b/Source/core/animation/css/CSSAnimatableValueFactory.cpp
index cd4539861b35d4a5924e6568175bf01d4f17a78f..05feed88ff878489c92a5b0b900f93d15b518a30 100644
--- a/Source/core/animation/css/CSSAnimatableValueFactory.cpp
+++ b/Source/core/animation/css/CSSAnimatableValueFactory.cpp
@@ -307,7 +307,7 @@ static SVGPaintType normalizeSVGPaintType(SVGPaintType paintType)
 // FIXME: Generate this function.
 PassRefPtrWillBeRawPtr<AnimatableValue> CSSAnimatableValueFactory::create(CSSPropertyID property, const ComputedStyle& style)
 {
-    ASSERT(CSSPropertyMetadata::isAnimatableProperty(property));
+    ASSERT(CSSPropertyMetadata::isInterpolableProperty(property));
     switch (property) {
     case CSSPropertyBackgroundColor:
         return createFromColor(property, style);