Bug 1646835 - implement basic SWGL compositor. r?jrmuizel Summary: This is a first implementation of a software-only SWGL RenderCompositor that relies on the existing widget hooks for Basic compositing. It attempts to lock the widget and get a DT whose underlying data it can supply directly to SWGL to composite to. Critically, it does not rely on OpenGL or any other form of HW accel to function. The interface between the RenderCompositor and SWGL will be further refined in follow-up patches. Differential Revision: https://phabricator.services.mozilla.com/D80268 Depends on D80267 Test Plan: Reviewers: jrmuizel Subscribers: Bug #: 1646835 Differential Diff: PHID-DIFF-jq2ikgwpolprjs4jzygd

Bug 1646835 - allow specifying backing data and stride for SWGL default framebuffer. r?jimb Summary: For performance reasons in SWGL software compositors. to avoid unnecessary full-screen copies of the framembuffer, we need to allow those compositors to map their underlying widget surfaces and pass that buffer to SWGL so that they can be directly rendered to. That also requires supporting custom strides, as we can't always enforce the particular layout of the buffers handed off to us. To that end, InitDefaultFramebuffer is generalized to take such information and then many places where we rely on a specific hard-coded SWGL-calculated stride have been altered to deal with a caller-supplied stride. Differential Revision: https://phabricator.services.mozilla.com/D80267 Test Plan: Reviewers: jimb Subscribers: Bug #: 1646835 Differential Diff: PHID-DIFF-lpuuvlesv5ekxvsspzw3

Tasks automatically selected. Pushed via `mach try auto`

Bug 1636539 - Part 4: Use Rust remote settings client to fetch remote kill switch. r?agashlin,bytesized

Bug 1636539 - Part 3: Add defaultagent-static Rust crate fetching remote disabled flag. r?agashlin,bytesized This lays out a Rust crate and statically links it into `windows-default-agent.exe`. It declares a single-method API (which will be invoked in the next commit). Strings cross the C/C++ <-> Rust FFI boundary as null-terminated UTF-8. (This will matter more if and when we use ETag and If-None-Match to get 304 results.) Errors are reported as Windows error codes or as the special codes above 32000 that we use to encode certain classes of failure. The bulk of the work is in implementing a [Viaduct](https://github.com/mozilla/application-services/tree/master/components/viaduct) backend built on top of `wininet.dll`. The motivation is that if and when this Remote Settings Rust client grows features (say, Content-Signature: verification), then by using Viaduct there is a smooth path to consume the client inside Firefox itself, because Viaduct already has a backend on top of Necko. That makes this abstraction relatively low friction: it exists, is in-tree already, and has a path to use in Gecko proper. It is expected that the layer above this will handle "gracefully failing", either open or closed; and will mirror Remote Settings configuration to the registry so that testers can use prod/stage/dev easily. TODO: - Configure logging so that more than `error!` appears. Consider disabling `env_logger` in non-debug configurations. - Determine how much error propagation we care to do. Are we going to report errors to Telemetry? Differential Revision: https://phabricator.services.mozilla.com/D78579

Bug 1636539 - Part 2: Mirror preferences for remote settings to Windows Default Browser Agent. r?agashlin,bytesized This isn't quite ready and tested yet, but I might as well throw it out for initial comments. This originally mirrored the `services.settings.server` pref. For WDBA, however, we only care about one record; and it's quite handy to be able to name that specific record (say, to one that disables things!). So eventually I'll make this mirror some new pref with just that URL. However, there's really no reason to do this in native code; it could just as easily be JavaScript that runs a little after startup. That would make it lighter to modify. But this location is next to the same pattern for the launcher process. Trade offs, trade offs. Do we have opinions about the form of the pref, and about where this mirroring logic lives?

Bug 1636539 - Part 1: Extract registry helper functions. r?agashlin,bytesized The pattern with `/mfbt/Poison.cpp` and `IMPL_MFBT` is well-established in the tree.

try_task_config for https://phabricator.services.mozilla.com/D76073 Differential Diff: PHID-DIFF-6io6bnt5fe6vnbymjilp

Bug 1638587 - Show dismissed login capture doorhanger when password field is edited and in its own Shadow Root; r=MattN Summary: Differential Revision: https://phabricator.services.mozilla.com/D76073 Test Plan: Reviewers: Subscribers: Bug #: 1638587 Differential Diff: PHID-DIFF-6io6bnt5fe6vnbymjilp

Try Chooser Enhanced (883 tasks selected) Pushed via `mach try again`

Bug 1635784 - Hack fix for test 2;

Bug 1635784 - Send child exit;

Bug 1635784 - Hack fix for test;

Bug 1635784 - Send to ancestor;

Bug 1635784 - Add LayersId to top-level mouse exit event;

Bug 1635784 - Test to reproduce the bug; Differential Revision: https://phabricator.services.mozilla.com/D79387

try_task_config for https://phabricator.services.mozilla.com/D80528 Differential Diff: PHID-DIFF-2umiakteaz6pwnge3ivq

Bug 1618013 - Enable backdrop-filter for early beta r=emilio Summary: Resolution from intent-to-ship discussion is to release for early beta or earlier. Differential Revision: https://phabricator.services.mozilla.com/D80528 Test Plan: Reviewers: emilio Subscribers: Bug #: 1618013 Differential Diff: PHID-DIFF-2umiakteaz6pwnge3ivq

try_task_config for https://phabricator.services.mozilla.com/D80765 Differential Diff: PHID-DIFF-4evtkaxmc6asimavrfwc

Bug 1631991 - stop wasting minutes of infra time waiting for the startup cache in gtests, r?Mossop!,dthayer! Summary: Test Plan: Reviewers: Mossop!, dthayer! Subscribers: Bug #: 1631991 Differential Diff: PHID-DIFF-4evtkaxmc6asimavrfwc