per https://bugzilla.mozilla.org/show_bug.cgi?id=1525191#c6 .

Depends on D101697

Differential Revision: https://phabricator.services.mozilla.com/D101698

via `./mach python build/pgo/genpgocert.py` per https://bugzilla.mozilla.org/show_bug.cgi?id=1525191#c1

Differential Revision: https://phabricator.services.mozilla.com/D101697

No bug - Tagging cb919a80aa244e2734a36f0122280125b1a0f7e1 with FIREFOX_78_7_0esr_BUILD2 a=release CLOSED TREE DONTBUILD

Bug 1655669 - part 2: Install snap binary because it's now required by snapcraft. r=sfraser, a=release

It became mandatory in https://github.com/snapcore/snapcraft/pull/3173/files#diff-84615e6204c0bf79064d03915b64c656R196

Differential Revision: https://phabricator.services.mozilla.com/D85151

Bug 1655669 - part 1: Improve logging by notably outputting what snap dependencies are downloaded. r=sfraser, a=release

Differential Revision: https://phabricator.services.mozilla.com/D85150

No bug - Tagging 0b2a3be4915be03d5434bd445234b7145f4d7dab with FIREFOX_78_7_0esr_BUILD1 a=release CLOSED TREE DONTBUILD

Differential Revision: https://phabricator.services.mozilla.com/D101344

Differential Revision: https://phabricator.services.mozilla.com/D98287

Differential Revision: https://phabricator.services.mozilla.com/D100708

Use a non-transparent version for the search engine favicon.

Differential Revision: https://phabricator.services.mozilla.com/D100937

Differential Revision: https://phabricator.services.mozilla.com/D100398

When ibus input method is changed, Firefox reinitializes the KeymapWrapper
object, causing duplicate calls to g_signal_connect. If Firefox is running
long enough, duplicate handlers accumulate, and Firefox starts to barrage the
X server with XkbGetUpdatedMap/XkbGetControls calls, slowing the X server and
itself down.

A symptom of this problem is that after switching the input methods, Firefox
ignores the input for a while (up to several seconds).

Differential Revision: https://phabricator.services.mozilla.com/D98847

Differential Revision: https://phabricator.services.mozilla.com/D100966

Bug 1682068 - Fix rooting hazard in ImageBitmap::CreateInternal by avoiding movable data. r=jrmuizel, a=RyanVM

Differential Revision: https://phabricator.services.mozilla.com/D100428

Bug 1686532 - Add dom::TypedArray_base::Reset() as a signal to the hazard analysis that no invalidatable data is being held onto. r=jonco, a=RyanVM

Differential Revision: https://phabricator.services.mozilla.com/D100429

Bug 1684123 - Implement GetArrayBufferViewFixedData and dom::TypedArray_base::FixedData(). r=jonco, a=RyanVM

Differential Revision: https://phabricator.services.mozilla.com/D100426

ping pypiwin32 to py2.7 v219

Differential Revision: https://phabricator.services.mozilla.com/D100245

Differential Revision: https://phabricator.services.mozilla.com/D101759

Backed out changeset 5001c738049d (bug 1677914)
Backed out changeset 278829e6842f (bug 1677914)
Backed out changeset 44c171274166 (bug 1677914)
Backed out changeset e33d8b470e16 (bug 1677914)
Backed out changeset 8b5c0a5b7501 (bug 1669879)

Depends on D97470

Differential Revision: https://phabricator.services.mozilla.com/D93457

Differential Revision: https://phabricator.services.mozilla.com/D97470

Differential Revision: https://phabricator.services.mozilla.com/D101498

And don't set SHELL on mac workers (added in da452e43b5d5 because of the
exception thrown by this code not having a fallback)

Differential Revision: https://phabricator.services.mozilla.com/D97686

All the workers that had hg under /tools/python27-mercurial are gone.
This also fixes run-task for workers running > 10.14.

Differential Revision: https://phabricator.services.mozilla.com/D92867

ESR78 backport

Differential Revision: https://phabricator.services.mozilla.com/D101021

Differential Revision: https://phabricator.services.mozilla.com/D100883

Differential Revision: https://phabricator.services.mozilla.com/D100787

Differential Revision: https://phabricator.services.mozilla.com/D88738

Differential Revision: https://phabricator.services.mozilla.com/D99662

Differential Revision: https://phabricator.services.mozilla.com/D98572

    Dispatching the `MediaDataEncoder::Encode()` invocation is not really
    necessary because the callback is desinated to run in task queue anyway.
    Also make `Shutdown()` wait for completion to make sure resource is
    released before next allocation.

Includes parts from:
* Bug 1662514 - Take mCallbackMutex when accessing mError.
* Bug 1662540: Remove unused member.
* Bug 1640416 - p5: run WebrtcMediaDataEncoder and the platform encoder in different thread pools/task queues.

Differential Revision: https://phabricator.services.mozilla.com/D98354

Differential Revision: https://phabricator.services.mozilla.com/D101353

Differential Revision: https://phabricator.services.mozilla.com/D99373

Bug 1642265 - [MIPS64] Add branchTestSymbol and fallibleUnboxPtr to MacroAssembler. r=tcampbell, a=RyanVM

Differential Revision: https://phabricator.services.mozilla.com/D77629

Differential Revision: https://phabricator.services.mozilla.com/D100261

Differential Revision: https://phabricator.services.mozilla.com/D98700

Differential Revision: https://phabricator.services.mozilla.com/D97386