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I found this while looking at the #include dependency graph for
browser_tests. I would guess these all got added when they got
de-virtualized; https://crrev.com/c/854747 was one such CL, and
it looks like they copy pasted a lot of the code, which probably
meant the self includes were accidentally added.

Change-Id: Ib0556461c118ce2d3698953955735391484616b7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2090911Reviewed-by: Scott Violet <sky@chromium.org>
Commit-Queue: Stephen Martinis <martiniss@chromium.org>
Cr-Commit-Position: refs/heads/master@{#747597}