GitLab

This CL recognizes that https://url.spec.whatwg.org/#scheme-start-state
only allows "ASCII alpha" as the first letter of a URL scheme.  Thanks
to this change, "1:..." is not treated as an absolute URL.

Fixed: 530123
Change-Id: I5ebadaebab18aebb5903968d14f39f092057f3cd
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2080075Reviewed-by: Mike West <mkwst@chromium.org>
Commit-Queue: Łukasz Anforowicz <lukasza@chromium.org>
Cr-Commit-Position: refs/heads/master@{#746191}