Bug 1387941 - Make scroll-snap-{coordinate, destination} discrete animation. r=daisuke

MozReview-Commit-ID: KVAYtp17i82

--HG--
extra : rebase_source : 0522f14d96e6df5f0ce1c9c9177fd3ec121be6dc

layout/style/test/test_transitions_per_property.html

@@ -83,10 +83,6 @@ var skippedProperties = {
     "text-shadow": true,            // Bug 1387973
     "vertical-align": true,         // Bug 1387949
     "z-index": true,                // Bug 1387939
-    // Bug 1387941: Spec drops these properties, so we might also need to update
-    // this for Gecko.
-    "scroll-snap-coordinate": true,
-    "scroll-snap-destination": true,
 };
 
 var supported_properties = {