Make description in FTP data connection histogram more accurate.
Make description in FTP data connection histogram more accurate.

This is a follow-up after http://codereview.chromium.org/547020

TEST=none
BUG=3073

Review URL: http://codereview.chromium.org/553013

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@36634 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser