MANUAL PUSH: Bug 1561376 - moz-phab needs to allow uploading a patch to a revision without commandeering

Differential Revision: https://phabricator.services.mozilla.com/D40889

--HG--
rename : toolkit/components/passwordmgr/LoginHelper.jsm => browser/components/aboutlogins/LoginBreaches.jsm
rename : browser/components/aboutlogins/tests/unit/test_getBreachesForLogins.js => browser/components/aboutlogins/tests/unit/test_getPotentialBreachesByLoginGUID.js
extra : source : b2e87e49589e59f0cd41fa8984b2381b32ec4956
extra : amend_source : 9b535119820b548534e57fc6e44a9161d779981f
extra : histedit_source : fb92082e7338e8358a046695b5e05e520840aa3d%2C4bf199c30066f740616c5a9aad4f5332328193f0