Online Accounts should try to reconnect Google Account when back online

When Ubuntu starts, if a Google Account is set up in Online Accounts and there's no working Internet connection yet, the Shutdown button goes red and so does its Online Accounts entry, complaining that Ubuntu could not connect to that account, and the user has to manually click the Authorize button. That's all s/he needs to do, so why not do it automatically after Ubuntu gets connected (and retry from time to time when already connected, in case of cable modems that which take a while to authenticate).

ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: gnome-control-center 1:3.6.3-0ubuntu12
ProcVersionSignature: Ubuntu 3.8.0-2.6-generic 3.8.0-rc4
Uname: Linux 3.8.0-2-generic i686
NonfreeKernelModules: wl
ApportVersion: 2.8-0ubuntu2
Architecture: i386
Date: Wed Jan 30 19:30:56 2013
InstallationDate: Installed on 2013-01-29 (1 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Alpha i386 (20130118)
MarkForUpload: True
SourcePackage: gnome-control-center
UpgradeStatus: No upgrade log present (probably fresh install)
usr_lib_gnome-control-center:
 activity-log-manager-control-center 0.9.4-0ubuntu6.1
 deja-dup 25.3-0ubuntu1
 gnome-control-center-signon 0.1.2bzr12.12.05-0ubuntu1
 gnome-control-center-unity 1.2-0ubuntu1
 indicator-datetime 12.10.3daily13.01.25-0ubuntu1