Fix setting shape-outside: none

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 ed09fd966eb9570f57632ab7a7d05aae7d4f4410..81d46c366f78bd8acd8679c8369f987a295d040f 100644
--- a/Source/core/animation/css/CSSAnimatableValueFactory.cpp
+++ b/Source/core/animation/css/CSSAnimatableValueFactory.cpp
@@ -224,7 +224,7 @@ inline static PassRefPtrWillBeRawPtr<AnimatableValue> createFromShapeValue(Shape
 {
     if (value)
         return AnimatableShapeValue::create(value);
-    return AnimatableUnknown::create(CSSValueAuto);
+    return AnimatableUnknown::create(CSSValueNone);
 }
 
 static double fontWeightToDouble(FontWeight fontWeight)