Add infobar metrics for the new search geolocation disclosure.

The new metrics record the action the user took after the disclosure was
shown (ignored, clicked settings, or dismissed), as well as the time
that the infobar was shown for.

BUG=661011

Review-Url: https://codereview.chromium.org/2534363002
Cr-Commit-Position: refs/heads/master@{#435567}
4 files changed