Bug 1703435 [wpt PR 28391] - Revert "Expand bounds of mask layer by 1 pixel", a=testonly

Bug 1703435 [wpt PR 28391] - Revert "Expand bounds of mask layer by 1 pixel", a=testonly

Automatic update from web-platform-tests
Revert "Expand bounds of mask layer by 1 pixel"

This reverts commit c0d54d1aa9b348261e4e3b550ad02e746229b9ac.

Reason for revert: The CL caused crbug.com/1196148.

Original change's description:
> Expand bounds of mask layer by 1 pixel
>
> This is similar to crrev.com/c/2786129 which is for synthesized clip
> mask layer, to ensure the mask fully covers the masked contents
> regardless of computation errors in later stages.
>
> To make that work, we also need to decomposite the MaskClip on the mask
> layer, otherwise the expanded pixels would be clipped off and would
> have no effect.
>
> Bug: 1171601
> Change-Id: I3198f228de1a0aa8baf2b8ed3c670ceabdeb57a8
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2787695
> Commit-Queue: Xianzhu Wang <wangxianzhu@chromium.org>
> Reviewed-by: Philip Rogers <pdr@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#869079}

Bug: 1171601, 1196148
Change-Id: I31d960ddee5e2b7bb34cbfd676e8e29718324fba
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2809522
Auto-Submit: Xianzhu Wang <wangxianzhu@chromium.org>
Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#869821}

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wpt-commits: ba6f0d24febc6d18de06e0853907422fd4115523
wpt-pr: 28391