To help support KaiOS, we are running the kaios project branch in automation, with a
different trust domain. Factor out the usages of `trust-domain` in `.taskcluster.yml`
to make it easy for the kaios branch to merge changes from mozilla-central.

Differential Revision: https://phabricator.services.mozilla.com/D75242

Differential Revision: https://phabricator.services.mozilla.com/D75241

To help support KaiOS, we are running the kaios project branch in automation, with a
different trust domain. Allow configuring worker aliases using `trust-domain`, so
that they worker aliases do not need to be adjusted on that branch.

Differential Revision: https://phabricator.services.mozilla.com/D75240

As the pseudo-class is still not un-prefixed.

MANUAL PUSH: Orange fixup on a CLOSED TREE

Differential Revision: https://phabricator.services.mozilla.com/D75345

Bug 1624802 - Run some dom/quota xpcshell tests in a child process as well; r=dom-workers-and-storage-reviewers,sg

For now, only test_listOrigins.js, test_originWithCaret.js and test_simpledb.js
can run in a child process because they don't need to set preferences or access
files in the profile directory.
We will be able to run more tests in a child process once we have SpecialPowers
for xpcshell implemented using JSProcessActors and when we expose the base
directory used by QuotaManager through a new QuotaManagerService method (to
avoid getting the profile directory using nsIDirectoryService because that
doesn't work in a child process).

Differential Revision: https://phabricator.services.mozilla.com/D75281

Bug 1624802 - Support running dom/quota xpcshell tests in a child process; r=dom-workers-and-storage-reviewers,sg

Differential Revision: https://phabricator.services.mozilla.com/D75279

Bug 1593226 - [remote] Use frame's window for dynamic isolated world creation on new document. r=remote-protocol-reviewers,maja_zf

Differential Revision: https://phabricator.services.mozilla.com/D75170

Bug 1593226 - [remote] Add support for frameId argument to Page.createIsolatedWorld. r=remote-protocol-reviewers,maja_zf

Differential Revision: https://phabricator.services.mozilla.com/D74636

Bug 1593226 - [remote] Emit Runtime.executionContextCreated and Runtime.executionContextDestroyed events also for frames. r=remote-protocol-reviewers,maja_zf

With this patch both events will be emitted when sub frames are
loaded or destroyed.

Because more work is necessary before we can enable general frame
support in Remote Protocol all the code has been put behind the
preference "remote.frames.enabled'. Only if it's true (which is
not the default) the events are emitted.

Differential Revision: https://phabricator.services.mozilla.com/D74635

Bug 1593226 - [remote] Only emit Runtime.executionContextsCleared events when Runtime is enabled. r=remote-protocol-reviewers,maja_zf

Differential Revision: https://phabricator.services.mozilla.com/D74634

Bug 1593226 - [remote] Return execution context instead of only the id in "enableRuntime" helper. r=remote-protocol-reviewers,maja_zf

Differential Revision: https://phabricator.services.mozilla.com/D74633

Bug 1593226 - [remote] Create a single context observer per content session. r=remote-protocol-reviewers,maja_zf

Domains would have created their own instance of the context observer,
which results in duplicated event listeners and observer notifications
to be registered.

This is still not ideal for the observer notifications, which should be
registered only once, but still an improvement for now. Bug 1635568 will
finally fix that.

Differential Revision: https://phabricator.services.mozilla.com/D74632

Per https://html.spec.whatwg.org/#selector-read-write:

> The :read-write pseudo-class must match any element falling into one
> of the following categories [...]:
>
>   * input elements to which the readonly attribute applies, and that
>     are mutable (i.e. that do not have the readonly attribute
>     specified and that are not disabled)
>
>   * textarea elements that do not have a readonly attribute, and
>     that are not disabled.
>
>   * elements that are editing hosts or editable and are neither
>     input elements nor textarea elements.

This fixes the `:disabled` bits.

This matches Safari behavior and the spec, but not Chrome, which has our
behavior.

Fix the WPT, which had multiple issues, as :read-only is defined to be
just the opposite of :read-write. This will pass as soon as I unprefix
the pseudo-class.

Differential Revision: https://phabricator.services.mozilla.com/D75230

Allows RemoteWorkerChild to clean up its data appropriately - objects
that must be released on the worker thread should never outlive the worker
thread, and the StrongWorkerRef/WorkerControlRunnable helps guarantee that.

Differential Revision: https://phabricator.services.mozilla.com/D72798

This isn't an actual `mach` command (it was deleted and replaced by `mochitest`).

Differential Revision: https://phabricator.services.mozilla.com/D75210

Differential Revision: https://phabricator.services.mozilla.com/D74697

Differential Revision: https://phabricator.services.mozilla.com/D70240

Bug 1637737 - cleanup test failures from `mach run` JS shell changes; r=firefox-build-system-reviewers,rstewart

In bug 1637665, we changed the OS X codepath for `mach run` to consult
`MOZ_WIDGET_TOOLKIT` as a substitute for "browserness".  Unfortunately,
this caused tests that only set `MOZ_MACBUNDLE_NAME` to fail.  Rather
than set `MOZ_WIDGET_TOOLKIT` in those tests, we probably should have
been checking `MOZ_MACBUNDLE_NAME` in the first place, since
`MOZ_MACBUNDLE_NAME` is also set only for the browser and not for the JS
shell.  We can also remove the xulrunner codepath, as xulrunner was
removed from the tree several years ago.

Differential Revision: https://phabricator.services.mozilla.com/D75315

We take this as an opportunity to remove
outdated information in aboutdebugging readme.

Differential Revision: https://phabricator.services.mozilla.com/D75314

Differential Revision: https://phabricator.services.mozilla.com/D74213

Bug 1634768 - [mozdevice] no longer wait for dev.bootcomplete property during initialization, r=gbrown.

Differential Revision: https://phabricator.services.mozilla.com/D75146

Bug 1619329 - Error propagation on main thread needs to be dispatched. r=dom-workers-and-storage-reviewers,sg

Differential Revision: https://phabricator.services.mozilla.com/D73249

Bug 1621433 - In RFP mode, turn canvas image extraction into a random 'poison pill' for fingerprinters r=tjr,jrmuizel

In RFP mode, canvas image extraction leads to an all-white image, replace that
with a random (sample 32 bytes of randomness and fill the buffer with that)
'poison pill'. This helps defeat naive fingerprinters by producing a random
image on every try. This feature is toggled using a new, default on, pref
`privacy.resistFingerprinting.randomDataOnCanvasExtract`.

Updated `browser_canvas_fingerprinting_resistance.js` to test this new feature
as well.

Updates and replaces D66308.

Differential Revision: https://phabricator.services.mozilla.com/D72716

Differential Revision: https://phabricator.services.mozilla.com/D75254

Differential Revision: https://phabricator.services.mozilla.com/D75307

Now that we have outlines for them, unthemed select / buttons show two
different focus indicators, which is undesired.

Furthermore, the ones in comboboxes are basically unremovable /
unstylable, so authors end up having to use massive hacks to do it, see
bug 1580935.

This fixes it elegantly (IMO) by just rendering them when themed (which
is what these were for anyway, to match the windows theme).

Differential Revision: https://phabricator.services.mozilla.com/D75283

Differential Revision: https://phabricator.services.mozilla.com/D75280

Bug 1631754 - Improve code to distinguish between root and content handling of events. r=snorp,geckoview-reviewers

In particular, the eConsumeNoDefault case also needs to check for mTargetIsRoot
and the apz aware listeners flag.

Differential Revision: https://phabricator.services.mozilla.com/D75301

Bug 1594572 attempted to fix a shutdown edge-case where a worker that was
started late enough would fail to create a PBackground connection and
early return.  This early return, however, left the worker never scheduled
for deletion, resulting in a shutdown hang.  See my restating block at
https://phabricator.services.mozilla.com/D73134#2224963 for more context.

The problem with this was that the attempt to clear the main event queue
ran afoul of pre/post event-processing hooks intended to ensure that control
runnables are processed if some non-worker code goes and spins a nested
event loop on the worker thread.  But because we never got around to
creating a cycle collected JS runtime on the thread, the call to get it
would return null and when we tried to get the recursion depth of a null
pointer, we would crash a little.

This patch addresses the immediate regression by adding a helper that returns
a depth of 1 in this edge-case.  It also fixes another problem with the fix
that is now more obvious having reviewed bug 1636147... we were failing to
mark the status of the worker as dead and drain any control runnables, which
could have resulted in the CrashIfHangingRunnable usage not working out right.
(Note that CrashIfHangingRunnable does handle Cancel() correctly, so the
fact that we end up canceling the runnable shouldn't break things.)

Differential Revision: https://phabricator.services.mozilla.com/D75185

Differential Revision: https://phabricator.services.mozilla.com/D74768

Differential Revision: https://phabricator.services.mozilla.com/D74645

Differential Revision: https://phabricator.services.mozilla.com/D74881

This patch will use perftest-test on any code change in python/mozperftest

Differential Revision: https://phabricator.services.mozilla.com/D75080

Adds tests for applink for gve/fenix on p2/g5

Differential Revision: https://phabricator.services.mozilla.com/D75097

Differential Revision: https://phabricator.services.mozilla.com/D74906

Bug 1636930 - Add missing data members in serialise/deserialise code of nsHttpResponseHead r=dragana

Differential Revision: https://phabricator.services.mozilla.com/D74653

Differential Revision: https://phabricator.services.mozilla.com/D74233

Bug 1637721 - openSUSEs bootstrap does not download the stackwalk toolchain r=firefox-build-system-reviewers,rstewart

In Bug1127565 bootstrap was given support for the openSUSE Linux distribution
Fetching the Stackwalk toolchain was not added unfortunately

his bug1636797 was hit during testing...
(also fixed some formatting "issues")

Differential Revision: https://phabricator.services.mozilla.com/D75189

Backed out changeset 5889105bd089 (bug 1558394)
Backed out changeset 80a0ea17c9f8 (bug 1558394)

Bug 1637888 - Add a null-check for Document passed to `PreloaderBase::NotifyRestart` as it is a valid case to happen, r=emilio

Differential Revision: https://phabricator.services.mozilla.com/D75282