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This reverts https://crrev.com/c/2351959, https://crrev.com/c/2345928,
https://crrev.com/c/2302970, and https://crrev.com/c/2257090 because
they are causing hard-to-diagnose crashes in production for a feature
that is supposed to be still turned off. The patches should be relanded
with more test coverage.

TBR=jdragon.bae@gmail.com, manukh@chromium.org, maxlg@chromium.org

Bug: 1114556, 1052493
Change-Id: Ic221c99e28246676d24bcd2185773657abef4781
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2354149
Commit-Queue: Rouslan Solomakhin <rouslan@chromium.org>
Reviewed-by: Rouslan Solomakhin <rouslan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#797651}