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Also does other misc. cleanup.

Bug: 1005568
Change-Id: I0f6203636ae60937ddf35b01fa985d0bb415853f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1837079
Commit-Queue: Peter Kasting <pkasting@chromium.org>
Auto-Submit: Peter Kasting <pkasting@chromium.org>
Reviewed-by: Peter Boström <pbos@chromium.org>
Cr-Commit-Position: refs/heads/master@{#702597}