GitLab

We have evidence of DownloadCurrentCandidateOrAskFaviconService()
crashing due to current_candidate() being null, at least until recent
fixes.

Temporarily and as a precaution, we return early in case the problematic
scenario is reproduced. We suspect this condition is not reached in
trunk, but it's a simple workaround to cherry-pick.

Bug: 828196
Change-Id: I41e2236f341a9ed9e18a950540f096e9de42df0b
Reviewed-on: https://chromium-review.googlesource.com/1002093Reviewed-by: Peter Kotwicz <pkotwicz@chromium.org>
Commit-Queue: Mikel Astiz <mastiz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#549264}