Revert of ash: Add checks for supervised users.

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 65 matching lines @@
   }
 
   virtual const base::string16 GetSupervisedUserManagerName() const OVERRIDE {
     return base::string16();
   }
 
   virtual const base::string16 GetSupervisedUserMessage() const OVERRIDE {
     return base::string16();
   }
 
-  virtual bool IsUserSupervised() const OVERRIDE {
-    return false;
-  }
-
   virtual bool SystemShouldUpgrade() const OVERRIDE {
     return UpgradeDetector::GetInstance()->notify_upgrade();
   }
 
   virtual base::HourClockType GetHourClockType() const OVERRIDE {
     return clock_type_;
   }
 
   virtual void ShowSettings() OVERRIDE {
   }
@@ skipping 235 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(SystemTrayDelegateLinux);
 };
 
 }  // namespace
 
 
 ash::SystemTrayDelegate* CreateLinuxSystemTrayDelegate() {
   return new SystemTrayDelegateLinux();
 }