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Fix nits to make code clearer.

Bug: 980277
Change-Id: I08c6f04fba7e78482f01fbd5ed5f6a0b1eb09a4d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1706556Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Tina Wang <tinazwang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#680108}