Web Animations: Add CSSAnimatableValueFactory API (partial implementation)

Source/core/animation/AnimatableValue.cpp

Index: Source/core/animation/AnimatableValue.cpp
diff --git a/Source/core/animation/AnimatableValue.cpp b/Source/core/animation/AnimatableValue.cpp
index 763788093f624bd6cd513c236a73c9dcd4827904..b15bcd52a52f0516295dd0183ecd43316afd2593 100644
--- a/Source/core/animation/AnimatableValue.cpp
+++ b/Source/core/animation/AnimatableValue.cpp
@@ -32,22 +32,11 @@
 #include "core/animation/AnimatableValue.h"
 
 #include "core/animation/AnimatableNeutral.h"
-#include "core/animation/AnimatableNumber.h"
-#include "core/animation/AnimatableUnknown.h"
 
 #include <algorithm>
 
 namespace WebCore {
 
-PassRefPtr<AnimatableValue> AnimatableValue::create(CSSValue* value)
-{
-    // FIXME: Move this logic to a separate factory class.
-    // FIXME: Handle all animatable CSSValue types.
-    if (AnimatableNumber::canCreateFrom(value))
-        return AnimatableNumber::create(value);
-    return AnimatableUnknown::create(value);
-}
-
 const AnimatableValue* AnimatableValue::neutralValue()
 {
     static AnimatableNeutral* neutralSentinelValue = AnimatableNeutral::create().leakRef();