Bug 965896 - allow a sync startOver to re-enable Firefox Accounts. r=rnewman
Bug 967047 - give FxA credentials the same special treatment the legacy sync host credentials get. r=rnewman
Backed out changeset c86a7dad496a (bug 967047) - only had f+, not r+
Back out d130046321ce (bug 965896) for xpcshell orange
merge fx-team to mozilla-central