Add %s to the command in the Gnome url handlers.

BUG=23793
TEST=Run xdg-open http://foo.com on Hardy/Gnome. The browser should open foo.com.
Review URL: http://codereview.chromium.org/274055

git-svn-id: http://src.chromium.org/svn/trunk/deps/third_party/xdg-utils@29103 4ff67af0-8c30-449e-8e8b-ad334ec8d88c
2 files changed