Add text-decoration-skip

Author: toptalo

src/css/Properties.js

@@ -435,6 +435,7 @@ var Properties = module.exports = {
     "text-decoration-color"             : "<text-decoration-color>",
     "text-decoration-line"              : "<text-decoration-line>",
     "text-decoration-style"             : "<text-decoration-style>",
+    "text-decoration-skip"              : "none | [ objects || spaces || ink || edges || box-decoration ]",
     "text-emphasis"                     : 1,
     "text-height"                       : 1,
     "text-indent"                       : "<length> | <percentage>",

tests/css/Validation.js

@@ -1488,6 +1488,28 @@ var YUITest = require("yuitest"),
         }
     }));
 
+    suite.add(new ValidationTestCase({
+        property: "text-decoration-skip",
+
+        valid: [
+            "none",
+            "objects",
+            "spaces",
+            "ink",
+            "edges",
+            "box-decoration",
+            "objects spaces",
+            "ink edges box-decoration",
+            "inherit",
+            "initial",
+            "unset"
+        ],
+
+        invalid: {
+            "foo" : "Expected (none | [ objects || spaces || ink || edges || box-decoration ]) but found 'foo'."
+        }
+    }));
+
     suite.add(new ValidationTestCase({
         property: "text-rendering",