Bug 856366 - Fix intermittent browser_privatebrowsing_zoomrestore.js failure and add logging to debug underlying problem. r=test, a=test-only
Bug 856366 - Fix intermittent browser_privatebrowsing_zoomrestore.js failure, part 2. r=test, a=test-only
Bug 854926 - Never request confirmation to close the last private browsing window. r=gavin, a=bajaj