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Previous patch removed functions non referenced by a caller:
https://chromium-review.googlesource.com/c/chromium/src/+/2523114

Pulling the string further, this caused more functions not to have a
any callers, which are removed here.

Bug: 1146469
Change-Id: Ic82c95c07523d10e6d88d45ea2fa392562f05501
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2521190
Commit-Queue: Arthur Sonzogni <arthursonzogni@chromium.org>
Reviewed-by: Kinuko Yasuda <kinuko@chromium.org>
Auto-Submit: Arthur Sonzogni <arthursonzogni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#825804}