"The existing mochitest chrome tests do this since tests that
stage have periodically timed out due to having to copy the
installation directory... especially on Linux." (from bug)
MozReview-Commit-ID: 7Gqqa9hLGVl
In the log file attached to this bug, we see multiple requests for
background updates come in at the same time. I can't see a way for
this to happen other than notify being called while the test is
running.
MozReview-Commit-ID: Gm0vW32X6mN
There's quite a few changes in here. At a high level, all we're trying to do
is to replace the old update popup with a less intrusive and more modern
doorhanger (set of doorhangers) for various update failure conditions.
MozReview-Commit-ID: 24sESMTosNX
