Closed Bug 1638611 Opened 6 years ago Closed 2 years ago

[wpt-sync] Sync PR 23659 - Remove dummy layers from CompositedLayerMapping

Categories

(Core :: Layout, task, P4)

Product:
Core
Component:
Layout
Type:
task

Tracking

()

Status:
RESOLVED INVALID

People

(Reporter: wpt-sync, Unassigned)

References

(
URL
)

Details

(Whiteboard: [wptsync downstream])

Sync web-platform-tests PR 23659 into mozilla-central (this bug is closed when the sync is complete).

PR: https://github.com/web-platform-tests/wpt/pull/23659
Details from upstream follow.

Xianzhu Wang <wangxianzhu@chromium.org> wrote:

Remove dummy layers from CompositedLayerMapping

We no longer need scrolling_layer_ after BGPT launched.

For squashing_containment_layer_, we can remove it by ensuring
squashing_layer_ is always the last child of graphics_layer_.

There is still one dummy layer: overflow_controls_host_layer_ which
is needed for convenience of reparenting overflow control layers.

BTW fix a bug: outline_decoration_layer_ should be above
overflow_controls_host_layer_, but previously the former was below
the latter.

Change-Id: Ibdafef32d918e66a12c35d2a5726c50ea374f7a9
Reviewed-on: https://chromium-review.googlesource.com/2205518
WPT-Export-Revision: 6700cab06f06e61c8cd896c7a30407e691529e78

Component: web-platform-tests → Layout
Product: Testing → Core
Status: NEW → RESOLVED
Closed: 2 years ago
Resolution: --- → INVALID
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