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This is a reland of 0fdf975b

Original change's description:
> OOR-CORS: Setup virtual layout tests for non OOR-CORS mode
>
> Now the OOR-CORS is enabled by default at m76, but we want to
> run some of layout tests w/o OOR-CORS for the potential risk
> to postpone the launch beyond the m76. Legacy code path should
> work well until then.
>
> Bug: 905971
> Change-Id: Ife79c90a031c9b729c629509da83e1ff2ac2a2c4
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1635081
> Commit-Queue: Takashi Toyoshima <toyoshim@chromium.org>
> Reviewed-by: Yutaka Hirano <yhirano@chromium.org>
> Auto-Submit: Takashi Toyoshima <toyoshim@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#665506}

NOAUTOREVERT=true
TBR=yhirano@chromium.org

Bug: 905971
Change-Id: I897730a276841da5c0b274ba446f84064ca8469b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1642907Reviewed-by: Takashi Toyoshima <toyoshim@chromium.org>
Commit-Queue: Takashi Toyoshima <toyoshim@chromium.org>
Cr-Commit-Position: refs/heads/master@{#665825}