The resulting URLRequestInfo is then only usable with a (trusted) URLLoader
which has universal access.
BUG=75350
TEST=none
Review URL: http://codereview.chromium.org/6652014
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@78047 0039d316-1c4b-4281-b951-d872f2087c98