Compact JS resource better by using rjsmin.

We have a jsminimizer (not very good but we have it) in blink so we
should use it.

BUG=359583

Review URL: https://codereview.chromium.org/252633006

git-svn-id: svn://svn.chromium.org/blink/trunk@172748 bbb929c8-8fbe-4397-9dbb-9b2b20218538