Bug 995162 - Rewrite the mechanism that (re)starts the OS.File worker. r=froydnj, a=lsblakk
Bug 1000198 - Fix sessionstore tests that remove the original tab. r=smacleod, a=test-only
Bug 1001521 - Fix tabview tests that remove the original tab. r=smacleod, a=test-only
Bug 1003096 - Make browser_tabview_bug595601.js wait until the test session is restored. r=smacleod, a=test-only