Created skeleton code for checking browser safety and implemented an update check as part of it.

Bug: 1015841
Change-Id: Iacec36c6666d855d113e074148a101b21ab0e76d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1856846
Commit-Queue: Andrey Zaytsev <[email protected]>
Reviewed-by: Dan Beam <[email protected]>
Reviewed-by: Florian Uunk <[email protected]>
Reviewed-by: Martin Šrámek <[email protected]>
Cr-Commit-Position: refs/heads/master@{#709015}
7 files changed