GitLab

Calling `match` was causing crashes in debug mode due to accessing
base::Optional<>::value without initialization. Calling match with
an unmatched request was crashing due to hitting a DCHECK. This returns
undefined now as per the spec.

Bug: 896768
Change-Id: I5d82e68ddca157a240ceaaec8990d2553366fbbb
Reviewed-on: https://chromium-review.googlesource.com/c/1289269
Commit-Queue: Rayan Kanso <rayankans@chromium.org>
Reviewed-by: Peter Beverloo <peter@chromium.org>
Cr-Commit-Position: refs/heads/master@{#601541}