GitLab

Reverts all of the PLM changes in
https://chromium-review.googlesource.com/c/chromium/src/+/1334944
and a partial revert of the previews code because of merge conflicts.

git checkout 967d3a9b \
  chrome/browser/page_load_metrics/page* \
  chrome/browser/page_load_metrics/metrics*

Bug: 874150
Change-Id: Ic943baa1c8945c3dd033de5890ba0d70b2efd5bc
Reviewed-on: https://chromium-review.googlesource.com/c/1355331Reviewed-by: Tarun Bansal <tbansal@chromium.org>
Reviewed-by: Bryan McQuade <bmcquade@chromium.org>
Commit-Queue: Robert Ogden <robertogden@chromium.org>
Cr-Commit-Position: refs/heads/master@{#612305}