Bug 1640564 - Delete the blob commands when we delete the blob image template. r=nical
Bug 1640564 - Delete the blob commands when we delete the blob image template. r=nical

Differential Revision: https://phabricator.services.mozilla.com/D87794

[ghsync] From https://hg.mozilla.org/mozilla-central/rev/54d73028c01ff34173a4cfa83c9ffd46feea07ef

servo/webrender,servo/webrender,servo/webrender,servo/webrender,servo/webrender,servo/webrender