Expect percentages to be unsupported for -moz-column-width. I'm not sure why I made it as it is, since they were never supported in either our implementation or the spec.

layout/style/test/property_database.js

@@ -368,8 +368,8 @@ var gCSSProperties = {
 		inherited: false,
 		type: CSS_TYPE_LONGHAND,
 		initial_values: [ "auto" ],
-		other_values: [ "15px", "50%" ],
-		invalid_values: [ "20", "-1px" ]
+		other_values: [ "15px" ],
+		invalid_values: [ "20", "-1px", "50%" ]
 	},
 	"-moz-column-rule-width": {
 		domProp: "MozColumnRuleWidth",

layout/style/test/test_value_computation.html

@@ -36,7 +36,6 @@
 /** Test for computation of values in property database **/
 
 var gNotAccepted = {
-  "-moz-column-width": [ "50%" ],
   "list-style": [ "none disc outside" ],
 };
 

layout/style/test/test_value_storage.html

@@ -47,7 +47,6 @@
  */
 
 var gNotAccepted = {
-  "-moz-column-width": [ "50%" ],
   "list-style": [ "none disc outside" ],
 };