…erstitials/

Most of these have been fixed automatically with ESLint's --fix flag.

This is in preparation of turning on presubmit checks for no-var and prefer-const
for components/.

Bug: 792774
Change-Id: I8fd0e9e657504be9759f578c23e2461cb3aeeb62
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1924793
Auto-Submit: Demetrios Papadopoulos <dpapad@chromium.org>
Commit-Queue: Christopher Thompson <cthomp@chromium.org>
Reviewed-by: Christopher Thompson <cthomp@chromium.org>
Cr-Commit-Position: refs/heads/master@{#717453}