GTK: Don't put a blank line in the tooltip for nameless bookmark bar bookmarks.
GTK: Don't put a blank line in the tooltip for nameless bookmark bar bookmarks.

Man, why is it so hard to get this right??

BUG=none
TEST=look at tooltips for a bookmark that has
a) no title
b) no url (folder)
c) both title and url
Review URL: http://codereview.chromium.org/207003

git-svn-id: http://src.chromium.org/svn/trunk/src@26418 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 88b74a48795a7dc4a7aec392f58aaa73a5c42fb8
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