1. Move adjustPathsOnWindows to head_update.js.in - Bug 879612 - Move app update common xpcshell test code into head_update.js.in. r=bbondy
2. Move gProcessObserver and gTimerCallback to head_update.js.in - Bug 879612 - Move app update common xpcshell test code into head_update.js.in. r=bbondy