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This is intended to show redundant layouts occurring on the switch
between touch and non-touch mode. Especially, traces produced by perf
bots will be easier to debug. See the bug for a motivating case.

Bug: 1054489
Change-Id: I108053677429b2b9c6c62c5f97ba81b4e63e8e52
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2134699Reviewed-by: Dana Fried <dfried@chromium.org>
Reviewed-by: Allen Bauer <kylixrd@chromium.org>
Commit-Queue: Collin Baker <collinbaker@chromium.org>
Cr-Commit-Position: refs/heads/master@{#758292}