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

chrome/browser/ui/ash/system_tray_delegate_linux.cc

 // 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.
 
 #include "chrome/browser/ui/ash/system_tray_delegate_linux.h"
 
 #include <string>
 
 #include "ash/shell.h"
 #include "ash/shell_delegate.h"
@@ skipping 269 matching lines @@
 
   virtual bool IsSearchKeyMappedToCapsLock() override {
     return false;
   }
 
   virtual ash::tray::UserAccountsDelegate* GetUserAccountsDelegate(
       const std::string& user_id) override {
     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();
   }
 
   void UpdateClockType() {
     clock_type_ = (base::GetHourClockType() == base::k24HourClock) ?
         base::k24HourClock : base::k12HourClock;
     GetSystemTrayNotifier()->NotifyDateFormatChanged();
   }
@@ skipping 16 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(SystemTrayDelegateLinux);
 };
 
 }  // namespace
 
 
 ash::SystemTrayDelegate* CreateLinuxSystemTrayDelegate() {
   return new SystemTrayDelegateLinux();
 }