GitLab

Hashes for search suggestions should be exactly 4 alphanumeric bytes,
this is explicitly enforced in searchbox_extension but in
search_suggest_service the byte array must be truncated to a length of
4 as the length is lost when passed through via IPC.
Previously the check was that they were *up to* 4 bytes, but this
isn't strict enough. Also remove usage of the banned std::to_string.

Bug: 965715
Change-Id: I687496ccaf225118a8f7b07bbaa2913bba19e6b7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1632716
Commit-Queue: Kyle Milka <kmilka@chromium.org>
Reviewed-by: Gayane Petrosyan <gayane@chromium.org>
Cr-Commit-Position: refs/heads/master@{#664345}