GitLab

Adds UKM metrics about the Lite Page Redirect preview including a bool
if it was committed and what navigation restart penalty it incurred.

Bug: 917491
Change-Id: I6db29a49b2ec8d0ac8127209dcf2a5925d325f7a
Reviewed-on: https://chromium-review.googlesource.com/c/1394792Reviewed-by: Ryan Sturm <ryansturm@chromium.org>
Reviewed-by: Steven Holte <holte@chromium.org>
Commit-Queue: Robert Ogden <robertogden@chromium.org>
Cr-Commit-Position: refs/heads/master@{#619813}