Differential Revision: https://phabricator.services.mozilla.com/D142280

Differential Revision: https://phabricator.services.mozilla.com/D142146

Differential Revision: https://phabricator.services.mozilla.com/D142291

Depends on D140641

Differential Revision: https://phabricator.services.mozilla.com/D142089

Bug 1758729 - Ensure search engines loading different locales from WebExtension are correctly loaded when reloading engines. r=mcheang,jteow

The add-on manager may not have updated the default locale for the WebExtension, so we need to ensure we get the correct default locale.
Also correct the check for testing if the name is different to the existing engine.

Differential Revision: https://phabricator.services.mozilla.com/D141605

Differential Revision: https://phabricator.services.mozilla.com/D142086

Bug 1730515 - FX doc: Use google search instead of sphinx search r=firefox-source-docs-reviewers,ahal DONTBUILD

sphinx search is pretty bad...

Differential Revision: https://phabricator.services.mozilla.com/D128022

Differential Revision: https://phabricator.services.mozilla.com/D135927

Bug 1761249 - The outline of the marketplace buttons from the “Get Firefox Focus” spotlight modal is not fully visible when the Dark theme is enable r=Mardak

Differential Revision: https://phabricator.services.mozilla.com/D142270

Differential Revision: https://phabricator.services.mozilla.com/D142335

Differential Revision: https://phabricator.services.mozilla.com/D140024

Implement a strategy suggested by Raymond Chen [0] for avoiding stack
overflow in library code: move the relevant work onto a temporary fiber
with a potentially arbitrary stack size.

Additionally, implement a cppunittest to test the fiber code.

[0] https://devblogs.microsoft.com/oldnewthing/20200601-00/?p=103815
    _The Old New Thing_, "How can I expand my thread’s stack at runtime?"
    (and several followup posts).

Differential Revision: https://phabricator.services.mozilla.com/D141521

Differential Revision: https://phabricator.services.mozilla.com/D142241

Bug 1761906 - Call DCSurfaceVideo::PresentVideo() only when it is necessary r=gfx-reviewers,jrmuizel

DCSurfaceVideo::PresentVideo() needs to be called only when RenderTextureHost, swapChainSize or VideoSwapChain are updated.

Since bug 1667303 fix, DCSurfaceVideo::PresentVideo() is called even when it is not necessary.

Differential Revision: https://phabricator.services.mozilla.com/D142315

Differential Revision: https://phabricator.services.mozilla.com/D142137

Bug 1761223 - [devtools] Fix the error Fix header intermittent TypeError on custom HTTP panel test r=bomsy

Differential Revision: https://phabricator.services.mozilla.com/D142221

WebRender's AA doesn't look good with non-uniform scales, so we want to avoid exposing more content to it for now.

Depends on D142213

Differential Revision: https://phabricator.services.mozilla.com/D142214

Instead of reasoning about whether items should be active with a yes/no granularity, we consider whether it could/should be and have some logic to weight that against the risk of causing extra layerization when making containers active.
For example a small image *could* be made active, but we might not make it so if it causes extra layerization in cases where larger images would have been made active.

Differential Revision: https://phabricator.services.mozilla.com/D142213

Backed out changeset 871a1fac289e (bug 1703953)
Backed out changeset 8151244bda18 (bug 1703953)
Backed out changeset eaf6d4c353be (bug 1703953)

Differential Revision: https://phabricator.services.mozilla.com/D142068

Bug 1703953 - Part 2: Apply mozilla/use-isInstance rules for .jsm files r=webdriver-reviewers,pip-reviewers,mhowell,Gijs,whimboo

This replaces all `instanceof` uses for DOM interfaces, since the operator in priviliged context works same as .isInstance().

Differential Revision: https://phabricator.services.mozilla.com/D141785

Differential Revision: https://phabricator.services.mozilla.com/D111354

Bug 1748520 - Add valgrind suppression for the leak of a dynamic atom created by language lookup. r=jseward

Differential Revision: https://phabricator.services.mozilla.com/D142168

Differential Revision: https://phabricator.services.mozilla.com/D142268

Differential Revision: https://phabricator.services.mozilla.com/D142209

Differential Revision: https://phabricator.services.mozilla.com/D141958

FFmpeg 5.0 is missing av_frame_get_color_range() and av_frame_get_colorspace() so we need to get that directly from AVFrame.

Differential Revision: https://phabricator.services.mozilla.com/D142064

Differential Revision: https://phabricator.services.mozilla.com/D132528

Backed out changeset 6573975cfe40 (bug 1743653) for causing mochitest failures on browser_protocol_ask_dialog_permission.js CLOSED TREE

Differential Revision: https://phabricator.services.mozilla.com/D142217

Differential Revision: https://phabricator.services.mozilla.com/D141988

Backed out changeset ddf7a48e3bf1 (bug 1760674) for causing mochitest failures on Link.cpp CLOSED TREE

Differential Revision: https://phabricator.services.mozilla.com/D132528

Differential Revision: https://phabricator.services.mozilla.com/D141958

Bug 1758828 - Extend privacy.dfpi_rollout_enabledByDefault telemetry. r=anti-tracking-reviewers,bvandersloot

Differential Revision: https://phabricator.services.mozilla.com/D140727

Backed out changeset a7b879827137 (bug 1754744) for causing build bustages on Unified_cpp_protocol_http4.obj CLOSED TREE