Bug 829229 - Please set the in-product update backoff to 48 hour. r=bbondy, a=akeybl
Bug 896986: Recent closed tab history middle click only opens top entry, r=jaws, f=dao, a=gavin

--HG--
extra : rebase_source : 9e5b501eac08eb28d68eec8dfe672a8105952a93
Bug 880101 - Part 1 - Add test that forces the gBrowser constructor a little too early. r=gavin, a=test-only
Bug 880101 - Part 2 - Wait until the initial tab's content document has been created before adding the progress listener. r=gavin, a=bajaj
Bug 904263 - Don't set disabled subproperties within font shorthand parsing. r=dbaron, a=bajaj
Bug 904263 - Add tests to assure all properties can be removed. r=dbaron, a=bajaj
Bug 877562 - Protect appcache hash tables with a mutex. r=jduell, a=bajaj