Re-enable half of new ftp unit tests in url_request_unittest.cc.
Re-enable half of new ftp unit tests in url_request_unittest.cc.

This change might introduce flakiness and test hangs, but we have
infrastructure in place to quickly detect it.

TEST=none
http://crbug.com/18036

Review URL: http://codereview.chromium.org/159614

git-svn-id: http://src.chromium.org/svn/trunk/src@22069 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: fd33850b7cc19a54374a9a4144fa956222e3ea96
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser