servo: Merge #18593 - Update inherited prop state for animation (from jryans:stylo-anim-inherit-context); r=heycam

https://bugzilla.mozilla.org/show_bug.cgi?id=1401256

Source-Repo: https://github.com/servo/servo
Source-Revision: 83705a8fa8992a974b32acc6635c7dfeed1afa50

--HG--
extra : subtree_source : https%3A//hg.mozilla.org/projects/converted-servo-linear
extra : subtree_revision : 08724f2f81fd5297eee8da5bbb3e12a16957e828

servo/components/style/properties/helpers/animated_properties.mako.rs

@@ -576,6 +576,12 @@ impl AnimationValue {
             % for prop in data.longhands:
             % if prop.animatable:
             PropertyDeclaration::${prop.camel_case}(ref val) => {
+                context.for_non_inherited_property =
+                    % if prop.style_struct.inherited:
+                        None;
+                    % else:
+                        Some(LonghandId::${prop.camel_case});
+                    % endif
             % if prop.ident in SYSTEM_FONT_LONGHANDS and product == "gecko":
                 if let Some(sf) = val.get_system() {
                     longhands::system_font::resolve_system_font(sf, context);