Per discussion with :tnikkel, AVIS should be enabled after some time of the AVIS patches landing to test whether preffing it off breaks anything.

https://hg.mozilla.org/mozilla-central/rev/947d2c894f1e

Backed out for causing leaks.

• backout: https://hg.mozilla.org/integration/autoland/rev/8d82420c819bf7807978f3eaed42da1f40879d52
• push: https://treeherder.mozilla.org/jobs?repo=autoland&group_state=expanded&selectedTaskRun=WGWHfOZnQdyVvzZwTLorxg.0&revision=947d2c894f1e883a217d092efaeafa139078153a
• failure log: https://treeherder.mozilla.org/logviewer?job_id=409409817&repo=autoland&lineNumber=13206

[task 2023-03-19T22:36:05.593Z] 22:36:05     INFO - GECKO(10097) | -----------------------------------------------------
[task 2023-03-19T22:36:05.593Z] 22:36:05     INFO - GECKO(10097) | SUMMARY: AddressSanitizer: 58800 byte(s) leaked in 66 allocation(s).
[task 2023-03-19T22:36:06.652Z] 22:36:06     INFO - GECKO(10097) | -----------------------------------------------------
[task 2023-03-19T22:36:06.653Z] 22:36:06     INFO - GECKO(10097) | Suppressions used:
[task 2023-03-19T22:36:06.654Z] 22:36:06     INFO - GECKO(10097) |   count      bytes template
[task 2023-03-19T22:36:06.655Z] 22:36:06     INFO - GECKO(10097) |       1         32 nsComponentManagerImpl
[task 2023-03-19T22:36:06.655Z] 22:36:06     INFO - GECKO(10097) |     633      18115 libfontconfig.so
[task 2023-03-19T22:36:06.656Z] 22:36:06     INFO - GECKO(10097) |       5      16420 libglib-2.0.so
[task 2023-03-19T22:36:06.657Z] 22:36:06     INFO - GECKO(10097) |      30      19200 libX11.so
[task 2023-03-19T22:36:06.658Z] 22:36:06     INFO - GECKO(10097) | -----------------------------------------------------
[task 2023-03-19T22:36:06.720Z] 22:36:06     INFO - TEST-INFO | Main app process: exit 0
[task 2023-03-19T22:36:06.720Z] 22:36:06     INFO - TEST-INFO | LeakSanitizer | To show the addresses of leaked objects add report_objects=1 to LSAN_OPTIONS
[task 2023-03-19T22:36:06.720Z] 22:36:06     INFO - TEST-INFO | LeakSanitizer | This can be done in testing/mozbase/mozrunner/mozrunner/utils.py
[task 2023-03-19T22:36:06.720Z] 22:36:06    ERROR - TEST-UNEXPECTED-FAIL | LeakSanitizer | leak at alloc::alloc::alloc::hfd4840f40062c30e, alloc::alloc::Global::alloc_impl::hfe0f7428b77cab4e, _$LT$alloc..alloc..Global$u20$as$u20$core..alloc..Allocator$GT$::allocate::h331bbcc371f94af5, alloc::raw_vec::RawVec$LT$T$C$A$GT$::allocate_in::h4cf1c099b74d7060
[task 2023-03-19T22:36:06.720Z] 22:36:06    ERROR - TEST-UNEXPECTED-FAIL | LeakSanitizer | leak at alloc::alloc::alloc::hfd4840f40062c30e, alloc::alloc::Global::alloc_impl::hfe0f7428b77cab4e, _$LT$alloc..alloc..Global$u20$as$u20$core..alloc..Allocator$GT$::allocate::h331bbcc371f94af5, alloc::raw_vec::RawVec$LT$T$C$A$GT$::allocate_in::hd4f8d13bfac85a2d
[task 2023-03-19T22:36:06.720Z] 22:36:06    ERROR - TEST-UNEXPECTED-FAIL | LeakSanitizer | leak at alloc::alloc::alloc::hfd4840f40062c30e, alloc::alloc::Global::alloc_impl::hfe0f7428b77cab4e, _$LT$alloc..alloc..Global$u20$as$u20$core..alloc..Allocator$GT$::allocate::h331bbcc371f94af5, alloc::alloc::exchange_malloc::hf0ac8415eb7343be
[task 2023-03-19T22:36:06.720Z] 22:36:06     INFO - runtests.py | Application ran for: 0:03:44.491983

Backout merged to central: https://hg.mozilla.org/mozilla-central/rev/8d82420c819bf7807978f3eaed42da1f40879d52

https://hg.mozilla.org/mozilla-central/rev/886f2b749e87