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These code are no longer being used, remove them

BUG=934009

Change-Id: If65a6104796a3e9b046cca5113ea19f352941183
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1641804
Commit-Queue: Min Qin <qinmin@chromium.org>
Reviewed-by: John Abd-El-Malek <jam@chromium.org>
Cr-Commit-Position: refs/heads/master@{#682090}