chromeos: Notify window manager about signout.

chrome/browser/chromeos/wm_ipc.cc

Index: chrome/browser/chromeos/wm_ipc.cc
diff --git a/chrome/browser/chromeos/wm_ipc.cc b/chrome/browser/chromeos/wm_ipc.cc
index aa09dd767d32c915c8fac806a5bb5437eb3afa18..3e856f34d54fededc2fda6d32817b7ca3a673e5b 100644
--- a/chrome/browser/chromeos/wm_ipc.cc
+++ b/chrome/browser/chromeos/wm_ipc.cc
@@ -163,6 +163,11 @@ void WmIpc::SetLoggedInProperty(bool logged_in) {
                  values);
 }
 
+void WmIpc::NotifyAboutSignout() {
+  Message msg(chromeos::WM_IPC_MESSAGE_WM_NOTIFY_SIGNING_OUT);
+  SendMessage(msg);
+}
+
 WmIpc::WmIpc() {
   scoped_array<char*> names(new char*[kNumAtoms]);
   scoped_array<Atom> atoms(new Atom[kNumAtoms]);