GitLab

Logging the number of tabs in a particular domain along with a rough
estimate of the total number of tabs across all windows.

Bug: 109917
Change-Id: I7c88cc6693b41d34b671342697b20772ef377f88
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2441285
Commit-Queue: Charlene Yan <cyan@chromium.org>
Reviewed-by: Alexei Svitkine <asvitkine@chromium.org>
Reviewed-by: Peter Boström <pbos@chromium.org>
Cr-Commit-Position: refs/heads/master@{#813252}