Bug 1506878 - Use the same accesskey for Unmute Tabs and Mute Tabs as we do for Unmute Tab and Mute Tab. r=dao Differential Revision: https://phabricator.services.mozilla.com/D12173

Backed out changeset 962527f12004 (bug 1504751) for browser chrome failures on content/aboutNetworking.js

Bug 1507644 - Always enable wayland for artifact builds. r=chmanchester Ideally, artifact builds would figure out the relevant buildconfig items that are set in the artifacts they download, such as MOZ_WAYLAND, MOZ_UPDATER, etc. In the meanwhile, since artifacts that are being downloaded have wayland support, we always set MOZ_WAYLAND when doing artifact builds. Depends on D12074 Differential Revision: https://phabricator.services.mozilla.com/D12075

Bug 1507644 - Remove dubious test in widget/gtk/moz.build. r=chmanchester The intent of the test is to barf at configure time when the target system doesn't use the glibc. The reason behind this is that the setup with the mozwayland stub library relies on the dynamic linking order the glibc uses. However, the test checks GLIB_LIBS, which is the result of pkg-config --libs for *GLIB*, not glibc, and all Gtk builds use glib, irrespective of the libc in use. Practically speaking, this means the error branch can't ever be taken... except on artifact builds, because we don't run pkg-config tests there. The dynamic linking order problem only really matter when wayland is enabled at runtime, which it isn't by default. We'll eventually have to sort it out for tier 3 platforms, but the current moz.build doesn't do anything for them anyways. Differential Revision: https://phabricator.services.mozilla.com/D12074

Bug 1499193 - Follow-up 2: Update SEARCH_COUNTS key r=mkaply Change the `<engine>.<alias>.urlbar` `SEARCH_COUNTS` keys to `<engine>.alias` as described in bug 1499193 comment 23 and later. Differential Revision: https://phabricator.services.mozilla.com/D12038

Bug 1507918 - Update webrender to commit 596984d1b49f47af65ccfaedd9684b2a90a564e2 (WR PR #3318). r=kats Differential Revision: https://phabricator.services.mozilla.com/D12175

Bug 1470450 - Add a debug mode to raptor; r=jmaher Differential Revision: https://phabricator.services.mozilla.com/D11937

No bug: [try-staging] Rename beta-sim to release-sim to reflect flexibility; r=aryx Now that `mach try release` also supports simulating release and esr, rename the option to `release-sim`. Differential Revision: https://phabricator.services.mozilla.com/D11516

Bug 1501878 - required_signoffs attribute. r=tomprince If a task has `required_signoffs` that match a release's `required_signoffs`, we should defer running that task until we have a matching `signoff_url`. - add filter_out_missing_signoffs - add transforms changes to inherit upstream `required_signoffs` - add `mar-signing` `required_signoffs` to the `partials-signing`, `mar-signing`, and `mar-signing-l10n` kinds Differential Revision: https://phabricator.services.mozilla.com/D11734

Bug 1501878: [taskgraph] Verify that required signoffs propagate to dependent tasks; r=aki Differential Revision: https://phabricator.services.mozilla.com/D12041

Bug 1501878 - required_signoffs and signoff_urls parameters r=tomprince Differential Revision: https://phabricator.services.mozilla.com/D11733

Bug 1501878 - beetmove complete mars. r=tomprince Differential Revision: https://phabricator.services.mozilla.com/D11732

Bug 1501878 - add mar-signing{,-l10n} kinds. r=tomprince also rename the partials_signing transform to mar_signing. Differential Revision: https://phabricator.services.mozilla.com/D11731

Bug 1501878 - drop complete mar from repackage-signing. r=tomprince We want to defer mar-signing to the second half of the promote phase, but we want to keep Windows repackaged exe signing in the first half of the promote phase. This means we need to stop signing the complete MAR in repackage-signing, and defer it to another kind. Differential Revision: https://phabricator.services.mozilla.com/D11730

Bug 1501878 - point partials at unsigned complete mars. r=tomprince Partial MAR generation doesn't need a signed complete MAR. By pointing the partials tasks at the unsigned complete MARs, we are able to defer signing the complete MARs without deferring partials creation. Differential Revision: https://phabricator.services.mozilla.com/D11729

Bug 1506457 - Only show titlebar indicators in the titlebar-secondary-buttonbox on macOS. r=dao Differential Revision: https://phabricator.services.mozilla.com/D12153

Backed out changeset 1d50d21da50d (bug 1507721) for spidermonkey bustages on dynamic-import-oom.js.

Bug 1504277 - Open new tabs at the end of a multiselection of tabs if the New Tab button is ctrl-clicked. r=dao Differential Revision: https://phabricator.services.mozilla.com/D11376

Backed out changeset d3468dd807eb (bug 1454613) for Btup bustages on js/src/rust/Cargo.toml

Backed out changeset e36852845947 (bug 1507312) for damp failures on debugger/custom.js.