Connect the 'changed' signal on the label entry and change the expander title as the user types.
Connect the 'changed' signal on the label entry and change the expander title as the user types.

BUG=none
TEST=none
Review URL: http://codereview.chromium.org/554012

git-svn-id: http://src.chromium.org/svn/trunk/src@36602 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: aeba3674eba0a47ad25ddf1d1482639b9b86fedc
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