[Settings WebUI] Record Manage Google Account Clicks

This change adds logic to record a user action whenever the "Manage your
Google Account" link gets clicked.

Bug: 907035
Change-Id: I081886ea84b9c748d8402aafc6b64bdd768378e9
Reviewed-on: https://chromium-review.googlesource.com/c/1426785
Commit-Queue: Jan Wilken Dörrie <jdoerrie@chromium.org>
Reviewed-by: Ilya Sherman <isherman@chromium.org>
Reviewed-by: Michael Giuffrida <michaelpg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#625151}
2 files changed