Fix memory leak in tips handler.
Fix memory leak in tips handler.

BUG=None
TEST=None

Review URL: http://codereview.chromium.org/150052

git-svn-id: http://src.chromium.org/svn/trunk/src@19533 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: e4d674c84ffbe20dd798d1b741f9a60cc283a338
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