This change prevents javascript:-URLs from being passed at the command
line. This restriction was already applied to every URL but the first.
Even the first URL did not result in any visible effect when Firefox is
started. Yet somehow the PGO profiler script managed to rely on it.
This commit ensures that "javascript:" URLs are not activated regardless of
position in the command line, and switches to a data:-URL for the PGO script to
achieve the (previously) desired effect of quitting the browser on startup.
Depends on D4929
Differential Revision: https://phabricator.services.mozilla.com/D5958
--HG--
extra : moz-landing-system : lando
f8161bc611