Adding infrastructure for possibility of changing manager names for the supervised accounts.

chrome/browser/ui/ash/system_tray_delegate_win.cc

Index: chrome/browser/ui/ash/system_tray_delegate_win.cc
diff --git a/chrome/browser/ui/ash/system_tray_delegate_win.cc b/chrome/browser/ui/ash/system_tray_delegate_win.cc
index 072410cc2737de33178367c6f7a38e2275421a61..496eccfac565e5aa74f1bd01887da93069408e9b 100644
--- a/chrome/browser/ui/ash/system_tray_delegate_win.cc
+++ b/chrome/browser/ui/ash/system_tray_delegate_win.cc
@@ -284,6 +284,14 @@ class SystemTrayDelegateWin : public ash::SystemTrayDelegate,
     return NULL;
   }
 
+  virtual void AddCustodianInfoTrayObserver(
+    ash::CustodianInfoTrayObserver* observer) override {
+  }
+
+  virtual void RemoveCustodianInfoTrayObserver(
+    ash::CustodianInfoTrayObserver* observer) override {
+  }
+
  private:
   ash::SystemTrayNotifier* GetSystemTrayNotifier() {
     return ash::Shell::GetInstance()->system_tray_notifier();