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Exactly what it says on the tin.

This is a fix for legacy layouts (fill, box, grid) which aren't derived
from LayoutManagerBase and which do not benefit from the logic in that
class which handles the invalidation. LayoutManagerBase still overrides
this logic with something more sophisticated.

If in the future a legacy layout overrides ViewVisibilitySet(), it
should either call the base implementation or handle the invalidation on
its own.


Bug: 1003500
Change-Id: I9eccef21784175820816852e1b9c05d0713ef2eb
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1894260
Commit-Queue: Dana Fried <dfried@chromium.org>
Reviewed-by: Siyu An <siyua@chromium.org>
Cr-Commit-Position: refs/heads/master@{#711966}