Timothy Nikkel 488989b2d9 Bug 1872563. Change WebRenderLayerScrollData::mVisibleRegion from a region to a rect. r=botond
It's only ever set to a rect. This should save a little bit of time serializing this struct.

Differential Revision: https://phabricator.services.mozilla.com/D197469
2024-01-06 00:58:32 +00:00
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