
        Bug 1558926 - Part 5: Store a reference to cached display item data i…

1a0949a

…n DisplayItemRef

Depends on D60760

Differential Revision: https://phabricator.services.mozilla.com/D60761

[ghsync] From https://hg.mozilla.org/mozilla-central/rev/974bcab6b1bf3cea22595e23d06cd9457d302299