Show an error page if a URL redirects to a javascript: URL.

BUG=935175

Change-Id: Id4a9198d5dff823bc3d324b9de9bff2ee86dc499
Reviewed-on: https://chromium-review.googlesource.com/c/1488152
Commit-Queue: Charlie Reis <creis@chromium.org>
Reviewed-by: Arthur Sonzogni <arthursonzogni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#635848}