Revert refactoring of CSSProperty .in files

Source/core/animation/StringKeyframe.cpp

Index: Source/core/animation/StringKeyframe.cpp
diff --git a/Source/core/animation/StringKeyframe.cpp b/Source/core/animation/StringKeyframe.cpp
index 2716c3a44b593a504280a117e2a83b61dc0ac7d7..3a9b06abd8ba67499df04b7f38662ccb97979db5 100644
--- a/Source/core/animation/StringKeyframe.cpp
+++ b/Source/core/animation/StringKeyframe.cpp
@@ -10,7 +10,6 @@
 #include "core/animation/LegacyStyleInterpolation.h"
 #include "core/animation/LengthStyleInterpolation.h"
 #include "core/animation/css/CSSAnimations.h"
-#include "core/css/CSSPropertyMetadata.h"
 #include "core/css/resolver/StyleResolver.h"
 #include "core/rendering/style/RenderStyle.h"
 
@@ -72,7 +71,7 @@ PassRefPtrWillBeRawPtr<Interpolation> StringKeyframe::PropertySpecificKeyframe::
     CSSValue* toCSSValue = toStringPropertySpecificKeyframe(end)->value();
     ValueRange range = ValueRangeAll;
 
-    if (!CSSPropertyMetadata::isAnimatableProperty(property))
+    if (!CSSAnimations::isAnimatableProperty(property))
         return DefaultStyleInterpolation::create(fromCSSValue, toCSSValue, property);
 
     switch (property) {