GitLab

Remove dead code from components/browsing_data.
Add test for output of HistoryCounter.

Bug: 843995
Change-Id: I44361907de445728f4783c2206857684414f8954
Reviewed-on: https://chromium-review.googlesource.com/1064117Reviewed-by: Martin Šrámek <msramek@chromium.org>
Commit-Queue: Christian Dullweber <dullweber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#561010}