By allowing the creation of StrongWorkerRefs in the Canceling state we
ensure that IPC will not fail and lead to crashes.
Differential Revision: https://phabricator.services.mozilla.com/D21920
--HG--
extra : moz-landing-system : lando
By taking an rvalue reference and using std::move more aggressively, we can
avoid at least two copies of these closures, which avoids a bit of atomic
refcounting.
Differential Revision: https://phabricator.services.mozilla.com/D14807
--HG--
extra : moz-landing-system : lando
Andrea Marchesini
Yaron Tausky
Blake Kaplan
Sylvestre Ledru