Looks like this is not needed and making a web-compat issue.

Differential Revision: https://phabricator.services.mozilla.com/D156985

Bug 1792163: Private window does not use private icon on taskbar when opening a link from "private" Library into a new private window r=mak

Differential Revision: https://phabricator.services.mozilla.com/D158149

That was introduced in Bug 1793925 to workaround a pre-existing issue.

Differential Revision: https://phabricator.services.mozilla.com/D159663

Differential Revision: https://phabricator.services.mozilla.com/D159699

Differential Revision: https://phabricator.services.mozilla.com/D159478

On Wayland drop target position can be a negative value. Drop target area can contain empty elements located at 0,0 with zero size.
If we hit such combination the drop element is placed at 0,0 and we don't consider other valid elements located at negative positions.
That leads to incorrect drop target indicatop placement; it's located at 0,0 coordinates.

In this patch we ignore empty elements and iterate through valid ones only so we correctly place drop indicator even when screen coordinates are negative.

Differential Revision: https://phabricator.services.mozilla.com/D159698

This fixes issues like the one that got me backed out, where we have a
dirty size request, and we want to synchronously persist sizemode.

With this patch, we'd persist sizemode sync, but size would still be
updated async, preserving the previous size behavior.

Differential Revision: https://phabricator.services.mozilla.com/D159644

This background task currently is generic enough that it can be reused for other components, namely QuotaCleaner in the child patches. Renaming makes it clear that it's generic.

Differential Revision: https://phabricator.services.mozilla.com/D156912

Bug 1796085 - Part 1: Define MOZ_BACKGROUNDTASKS macro globally r=smaug,necko-reviewers,application-update-reviewers,nalexander,valentin

There are 10+ separate macro definition for this, we can do it globally instead.

Differential Revision: https://phabricator.services.mozilla.com/D156911

The allocation metadata builder hook means that we can GC during allocation and
observe this object in a partially initialized state.

Differential Revision: https://phabricator.services.mozilla.com/D159673

Stuff wraps properly now with flexbox emulation.

Differential Revision: https://phabricator.services.mozilla.com/D159621

Bug 1794597 [Wayland] Apply popup drop position workaround to both drag motion and drag drop operations r=emilio

Differential Revision: https://phabricator.services.mozilla.com/D159674

Differential Revision: https://phabricator.services.mozilla.com/D159248

The dropmarker is already 12px and centered, so this shouldn't be needed
and in fact breaks the stretching.

Differential Revision: https://phabricator.services.mozilla.com/D159681

Bug 1792959 - fix SVGImageElement::HasValidDimensions if we're display:none or not in a document r=emilio,chunmin

Differential Revision: https://phabricator.services.mozilla.com/D159635

This depends on bug 1795892 and restores the sizing behavior that XUL had for
this case (making the overflow: hidden element not contribute to the intrinsic
size of the container).

If this were to be written today, we couldd probably use absolute positioning
or transforms, and maybe this could be simplified a bit. This is the less risky
change tho.

Differential Revision: https://phabricator.services.mozilla.com/D159639

Backed out changeset 0a01bc98928c (bug 1795840) for causing GTest failures on GeckoProfiler.cpp. CLOSED TREE

Backed out changeset c2d95473dccd (bug 1796017) for causing bc failures on browser_ext_urlbar.js and browser_interventions.js.

Differential Revision: https://phabricator.services.mozilla.com/D159580

Differential Revision: https://phabricator.services.mozilla.com/D158680

Differential Revision: https://phabricator.services.mozilla.com/D159532

Differential Revision: https://phabricator.services.mozilla.com/D159590

This turned out to be more complicated than expected, because:
- SameSite=None requires https://
- Many test were using the mochi.test domain, which is not reachable via https

Differential Revision: https://phabricator.services.mozilla.com/D157637

Differential Revision: https://phabricator.services.mozilla.com/D159651

This removes the barrier tracer and marks GC things immediately when barriers
fire. This restores the original behaviour before the separate barrier tracer
was added.

Differential Revision: https://phabricator.services.mozilla.com/D159492

Differential Revision: https://phabricator.services.mozilla.com/D159487

Differential Revision: https://phabricator.services.mozilla.com/D159671

Differential Revision: https://phabricator.services.mozilla.com/D159589

Why the fuzziness is intermittent is beyond me, but the idea of the test is to stress preicsion issues with a scaling transform applied to an SVG rect so it is prone to result in small difference on the antialiased edges.

Differential Revision: https://phabricator.services.mozilla.com/D159501

Bug 1796029 - Fix search code when checking to display a notification to handle cases where information is not present. r=daleharvey

Differential Revision: https://phabricator.services.mozilla.com/D159670

Bug 1796029 - Fix search code when checking to display a notification to handle cases where information is not present. r=daleharvey

Differential Revision: https://phabricator.services.mozilla.com/D159670

Backed out changeset b7cdb0cf84b6 (bug 1785277) for causing devtools failures on browser_dbg-quick-open.js. CLOSED TREE

Backed out changeset b7cdb0cf84b6 (bug 1785277) for causing devtools failures on browser_dbg-quick-open.js. CLOSED TREE

Before bug 1289641, we didn't have pdbstr in the VS artifact, but we now
do as a side effect of using vsdownload. So instead of exfiltrating the
file from a Windows worker, we can just use the one from VS.

Differential Revision: https://phabricator.services.mozilla.com/D159659

es-CL -> d1477929e1f9d5a5c5ada8090be92d58e26094da
fa -> 1fcf66e4c61c080cab1c7c940211a16a7df58179
ia -> 722f4964582cdfc87f16fea794782f3e165c11e2
ka -> cf08d7ac914b4bd2a9a2c1b05224db513387bb42
pt-BR -> b53e2c7c65a46b04e32e87481aca90931b188c16
sc -> cfe67f8185f97fe960fbad1defe4febe4d8690c0

Create some css variables matching the ones found in common.css (we cannot import common.css as is, as it brings too many default styles not
scoped to a specific classname etc...).

The main changes should be around the colors of links and of the selected category in the left sidebar

The separator in the sidebar also uses different colors in light/dark theme, mostly to be able to follow the base border color.

Differential Revision: https://phabricator.services.mozilla.com/D159664

Including it in `HTMLEditor.h` causes creating static constructors for
the modules which include `HTMLEditor.h`.  And the public methods are used
only in the `libeditor`.  Therefore, we can make `HTMLEditor.h` stop including
it and stop exposing `JoinSplitNodeDirection.h`.

Differential Revision: https://phabricator.services.mozilla.com/D159363

Bug 1795849 [Linux] Chancel D&D operation on Wayland and XWayland when D&D source window is closing r=emilio

Differential Revision: https://phabricator.services.mozilla.com/D159588

Backed out 5 changesets (bug 1789858, bug 1790392, bug 1790398) for causing bustages on nsCORSListenerProxy.cpp (nsHttpChannel). CLOSED TREE

Backed out changeset e9bf86398696 (bug 1790398)
Backed out changeset ed10210ab627 (bug 1790398)
Backed out changeset 827abb353551 (bug 1790398)
Backed out changeset d25bc7131846 (bug 1790392)
Backed out changeset c941363309c5 (bug 1789858)