Intent to prototype: fit-content() function

[Boris Chiou]

Hi,

[css-sizing-3] introduces a fit-content() value, that is
a new value similar to fit-content, except taking an argument instead of
using the available width. This value is used in width/min-width/max-width
(if the inline axis is horizontal). Gecko supports the -moz-fit-content
keyword, but before un-prefixing it, I think we should support
fit-content() first. The spec should be stable enough and the related spec
issue has been resolved (https://github.com/w3c/csswg-drafts/issues/3731).

Note: this is different from the fit-content() in grid layout.


*Bug*: https://bugzilla.mozilla.org/show_bug.cgi?id=1312588

*DevTools bug: Not open yet.*

*Standard*:
https://drafts.csswg.org/css-sizing-3/#valdef-width-fit-content-length-percentage

*Platform coverage*: All.

*Preference*: layout.css.fit-content-func.enabled

*Other browsers*: No other browsers support this now.

*web-platform-tests*: There are some wpts related to parsing fit-content()
already, but we still have to add more reftests for fit-content(). All wpts
should be in:
https://github.com/web-platform-tests/wpt/tree/master/css/css-sizing/



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[desktop] Bugs logged by Desktop Release QA in the last 7 days

[Camelia Badau]

Hello,

Here's the list of new issues found and filed by the Desktop Release QA
team in the last 7 days.
Additional details on the team's priorities last week, as well as the plans
for the current week are available at: https://tinyurl.com/y65ucyyd.
Bugs logged by Desktop Release QA in the last 7 days:

Firefox: Address Bar
* NEW - https://bugzil.la/1695650 - [Address bar] All context menu options
are disabled after undoing the URL string until the address bar is empty
* VERIFIED FIXED - https://bugzil.la/1695676 - The QS sponsored URL is not
displayed after a restart

Firefox: Menus
* NEW - https://bugzil.la/1695694 - [Proton] Windows 10 Context menu
separator colours need updating

Firefox: Bookmarks & History
* NEW - https://bugzil.la/1696140 - [Ubuntu] The edit bookmark dropdown
from the Star icon in address bar is offset
* NEW - https://bugzil.la/1696142 - Bookmark drop down menu is slightly
moved sometimes when clicking Show/Hide Bookmarks folder

Firefox: Toolbars and Customization
* NEW - https://bugzil.la/1696599 - Profiler - Settings picker not centered
in More Tools overflow menu

Firefox: Preferences
* NEW - https://bugzil.la/1696630 - Preferences - section picker - better
adjust available space and paddings to avoid early display of scrollbar
* NEW - https://bugzil.la/1696645 - Preferences - Container buttons in
settings view are expanding in height to fill in available area-height

Firefox: PDF Viewer
* NEW - https://bugzil.la/1696640 - [macOS 10.12.6] White page is displayed
with certain PDF in Print Preview or when Saved to PDF

Toolkit: Form Autofill
* NEW - https://bugzil.la/1696132 - Form Autofill dropdown for saved
addresses is barely visible on Ubuntu 20.04

Core: Graphics: WebRender
* NEW - https://bugzil.la/1695867 - A state of war page is not being
rendered

Core: Panning and Zooming
* NEW - https://bugzil.la/1696106 - Scrolling via mousewheel or touchpad is
not possible on Jetlag.photos page

Core: Widget: Cocoa
* NEW - https://bugzil.la/1696428 - Web content transition is not smooth
when entering fullscreen mode

DevTools: Netmonitor
* RESOLVED FIXED - https://bugzil.la/1695860 - DevTools - Learn more about
buttons - lacks hover indicator

DevTools: Performance Tools (Profiler/Timeline)
* NEW - https://bugzil.la/1696611 - Profiler - Settings picker hard to read
with OS theme set to dark
* NEW - https://bugzil.la/1696621 - Profiler - change animation to be the
same as for the other [list_item >](s) added to the Customize Overflow Menu

This is available as a Bugzilla bug list as well:
https://tinyurl.com/78pn4tn4.


Regards,

Camelia Badau
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