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Also changes dougarnett to mcrouse/sophiechang where appropriate

Bug: 1140005,1140000,1139999,1139998,1139997,1139996,1139995,1139994,1139993,1139992,1138428
Change-Id: Ie562d08a9038a7ff8fc4be093aa1f7771fa2cfc2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2485757
Commit-Queue: Sophie Chang <sophiechang@chromium.org>
Reviewed-by: Michael Crouse <mcrouse@chromium.org>
Reviewed-by: Tarun Bansal <tbansal@chromium.org>
Cr-Commit-Position: refs/heads/master@{#819216}