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

ash/system/chromeos/supervised/custodian_info_tray_observer.h

Index: ash/system/chromeos/supervised/custodian_info_tray_observer.h
diff --git a/ash/system/chromeos/supervised/custodian_info_tray_observer.h b/ash/system/chromeos/supervised/custodian_info_tray_observer.h
new file mode 100644
index 0000000000000000000000000000000000000000..c08f2beda6d7e9d08bd2533261e642a8ee0f75b2
--- /dev/null
+++ b/ash/system/chromeos/supervised/custodian_info_tray_observer.h
@@ -0,0 +1,22 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef ASH_SYSTEM_CHROMEOS_SUPERVISED_CUSTODIAN_INFO_TRAY_OBSERVER_H_
+#define ASH_SYSTEM_CHROMEOS_SUPERVISED_CUSTODIAN_INFO_TRAY_OBSERVER_H_
+
+namespace ash {
+
+class CustodianInfoTrayObserver {
+ public:
+  // Called when information about the supervised user's custodian is changed,
+  // e.g. the display name.
+  virtual void OnCustodianInfoChanged() {}

[Daniel Erat, 2014/10/07 16:16:00]

make this be abstract instead of having an empty implementation (since it
doesn't make sense to implement this interface without overriding this method)

[merkulova, 2014/10/08 09:19:36]

Done.

+
+ protected:
+  virtual ~CustodianInfoTrayObserver() {}
+};
+
+} // namespace ash
+
+#endif  // ASH_SYSTEM_CHROMEOS_SUPERVISED_CUSTODIAN_INFO_TRAY_OBSERVER_H_