Fix animation of auto for -webkit-column-count and -webkit-column-width

LayoutTests/animations/interpolation/webkit-column-count-interpolation.html

Index: LayoutTests/animations/interpolation/webkit-column-count-interpolation.html
diff --git a/LayoutTests/animations/interpolation/webkit-column-count-interpolation.html b/LayoutTests/animations/interpolation/webkit-column-count-interpolation.html
index a5c89b9a2801c4b3e603d2ae63e9b9e7b575a955..0c7c58b9575a82cc5491a9fd3f6db06d558c77d7 100644
--- a/LayoutTests/animations/interpolation/webkit-column-count-interpolation.html
+++ b/LayoutTests/animations/interpolation/webkit-column-count-interpolation.html
@@ -20,6 +20,12 @@
 </template>
 <script src="resources/interpolation-test.js"></script>
 <script>
+assertNoInterpolation({
+  property: '-webkit-column-count',
+  from: 'auto',
+  to: '5'
+});
+
 assertInterpolation({
   property: '-webkit-column-count',
   from: '1',
@@ -40,7 +46,7 @@ assertInterpolation({
 // 5.
 assertInterpolation({
   property: '-webkit-column-count',
-  from: '0',
+  from: '1',

[alancutter (OOO until 2018), 2015/06/19 04:31:44]

0 is not a valid value here.

   to: '5'
 }, [
   {at: -0.5, is: '1'}, // Must be strictly positive