Re: Automatically including add_task into SimpleTest.js

This has now landed, so feel free to start using add_task without any extra boilerplate in mochitests. AddTask.js is also now removed so if you had any in-flight patches that were adding tests using it please remove the

Re: Lack of browser mochitests in non-e10s configuration and support for turning off e10s on desktop going forward

If we're not testing it, we shouldn't be shipping it to users. It would be great if someone familiar with the esr60 situation could confirm that we don't plan to repeat it for esr68. It would also be great if someone could explain the rationale for running some, but not all of the suites in 1proc m