GitLab

Adds a browser test so that coverage ukm is recorded in both the modes
of enabling and disabling the actual image redirection.

Bug: 1047330
Change-Id: I97cfaa27f3089fc0d909c1357a3a3fa6b5c8405a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2111784Reviewed-by: Michael Crouse <mcrouse@chromium.org>
Commit-Queue: rajendrant <rajendrant@chromium.org>
Cr-Commit-Position: refs/heads/master@{#752061}