Add safe browsing trace events for full hash matches

These will aid in debugging safe browsing related runtime issues.

Bug: None
Change-Id: Ibb64b4bf850f278e25bf2249930a755d9f216f68
Reviewed-on: https://chromium-review.googlesource.com/862467
Reviewed-by: Varun Khaneja <vakh@chromium.org>
Commit-Queue: Charlie Harrison <csharrison@chromium.org>
Cr-Commit-Position: refs/heads/master@{#529006}
5 files changed