`image-short.png` never exists in the first place when this test was
introduced, so the intermittent happens when the test file shows a
broken image icon and the reference file without, or the other way
around.
I believe the `<img>` is served as a monolithic element to overflow
`<div class="short">`. Use an empty src should suffice.
Differential Revision: https://phabricator.services.mozilla.com/D46640
--HG--
extra : moz-landing-system : lando
We need to distinguish between the out-of-process iframe is totally invisible and
the given nsIFrame is not in out-of-process iframes.
Differential Revision: https://phabricator.services.mozilla.com/D46553
--HG--
extra : source : fc785139655e3d22d681f1419bd4c80f93460f0e
We need to distinguish between the out-of-process iframe is totally invisible and
the given nsIFrame is not in out-of-process iframes.
Differential Revision: https://phabricator.services.mozilla.com/D46553
--HG--
extra : moz-landing-system : lando
This is in the interests of allowing the frontend team to experiment with
switching from XUL grid to CSS grid, without inadvertently changing the
display values for the grid items via css-grid-item blockification.
This patch's new pref is not expected to remain in the codebase for long.
We're just adding it so that the behavior remains the same by default, because
we do currently have some XUL code that inadvertently depends on -moz-box
display values being blockified to 'block'. The plan is for folks to remove
that dependency e.g. by adding explicit 'display:block' styling to frontend
code as-needed. After we've done that, we can tentatively flip the pref to true
by default, and then remove the pref entirely.
Differential Revision: https://phabricator.services.mozilla.com/D45258
--HG--
extra : moz-landing-system : lando
Currently, there's no way to tell whether the SIDEWAYS bit is set from
`writing-mode:sideways-*` or `writing-mode:vertical-*; text-orientation:sideways;`.
To be able to tell them apart, split SIDEWAYS bits into VERTICAL_SIDEWAYS
and TEXT_SIDEWAYS. This is needed by my proposed solution in bug 1102175.
Also, provide convenience methods related to sideways writing-mode, and replace
obscure checks in the codebase.
Note that we don't have the use cases to distinguish vertical-rl from
sideways-rl in layout, but for the completeness, IsSidewaysLR() is still
defined.
Differential Revision: https://phabricator.services.mozilla.com/D46321
--HG--
extra : moz-landing-system : lando
In particular: in our frontend code, if we happen to end up with a flex/grid
item with 'display:-moz-box', we want it to take the same sizing codepath as
other flex/grid items, which are all block-level (even though -moz-box is not
exactly block-level itself). Notably, we want to use ComputeSizeFlags::eDefault
for sizing (like we do for real block-level things), because that's necessary
in order for grid items to stretch correctly in their inline axis.
Also: this patch renames "isBlock" to "isBlockLevel" to reflect reality. Its
naming is based on the constant NS_CSS_FRAME_TYPE_BLOCK, which in fact is not
specific to 'display:block' but in fact is for frames that are "block-level in
normal flow" (which I think in practice means block-level and not
out-of-flow). That is documented here:
https://searchfox.org/mozilla-central/rev/7531325c8660cfa61bf71725f83501028178cbb9/layout/generic/ReflowInput.h#51
Differential Revision: https://phabricator.services.mozilla.com/D46539
--HG--
extra : moz-landing-system : lando
Now that we count them, I think we should do this.
This property is pretty painful for various reasons:
* It's a pretty awkward non-standard property.
* Has a pretty short name, so people use it instead of the standard
alternatives.
* We cannot really even implement it easily anyhow, without breaking a whole
bunch of stuff, because pages do things like:
```
myelement {
zoom: 0.5;
-moz-transform: scale(0.5);
transform-origin: 0 0;
}
```
For now this is only recorded when CSS use counters are enabled (Nightly for
now), but I want to change it once bug 1578661 is in central.
The hope is that this warning slightly raises awareness of this property not
being standard. You get a CSS parsing error in the console, but those are
usually too noisy and disabled by default.
Differential Revision: https://phabricator.services.mozilla.com/D46430
--HG--
extra : moz-landing-system : lando
Also causes removing a pref to take effect immediately, and prevents
losing all color pref overrides when the theme changes.
Differential Revision: https://phabricator.services.mozilla.com/D44416
--HG--
extra : moz-landing-system : lando
By reporting the properties in MappedAttrParser that we used to (the test relies
on counting those), and by adjusting the histogram name to the new thing.
Differential Revision: https://phabricator.services.mozilla.com/D44697
--HG--
extra : moz-landing-system : lando
We only have two counters enabled, just for testing, and they just count from
the SVG mapped attribute code. That's not great, and they mostly complicate the
next few patches.
Differential Revision: https://phabricator.services.mozilla.com/D44695
--HG--
extra : moz-landing-system : lando
This is to avoid skip-ink problems with fonts that leave the OpenType field at zero,
which is unlikely to ever be what is really wanted. Authors can still avoid the clamp by
explicitly using text-underline-offset:from-font.
Differential Revision: https://phabricator.services.mozilla.com/D46268
--HG--
extra : moz-landing-system : lando
By reporting the properties in MappedAttrParser that we used to (the test relies
on counting those), and by adjusting the histogram name to the new thing.
Differential Revision: https://phabricator.services.mozilla.com/D44697
--HG--
extra : moz-landing-system : lando
We only have two counters enabled, just for testing, and they just count from
the SVG mapped attribute code. That's not great, and they mostly complicate the
next few patches.
Differential Revision: https://phabricator.services.mozilla.com/D44695
--HG--
extra : moz-landing-system : lando
By reporting the properties in MappedAttrParser that we used to (the test relies
on counting those), and by adjusting the histogram name to the new thing.
Differential Revision: https://phabricator.services.mozilla.com/D44697
--HG--
extra : moz-landing-system : lando
We only have two counters enabled, just for testing, and they just count from
the SVG mapped attribute code. That's not great, and they mostly complicate the
next few patches.
Differential Revision: https://phabricator.services.mozilla.com/D44695
--HG--
extra : moz-landing-system : lando
By reporting the properties in MappedAttrParser that we used to (the test relies
on counting those), and by adjusting the histogram name to the new thing.
Differential Revision: https://phabricator.services.mozilla.com/D44697
--HG--
extra : moz-landing-system : lando
