Update the AvatarMenu when a supervised user's custodian info changes.

chrome/browser/profiles/avatar_menu.cc

 // Copyright (c) 2012 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/profiles/avatar_menu.h"
 
 #include "ash/ash_switches.h"
 #include "base/bind.h"
 #include "base/i18n/case_conversion.h"
 #include "base/metrics/field_trial.h"
@@ skipping 35 matching lines @@
 const char kShowProfileSwitcherFieldTrialName[] = "ShowProfileSwitcher";
 const char kAlwaysShowSwitcherGroupName[] = "AlwaysShow";
 
 }  // namespace
 
 AvatarMenu::AvatarMenu(ProfileInfoInterface* profile_cache,
                        AvatarMenuObserver* observer,
                        Browser* browser)
     : profile_list_(ProfileList::Create(profile_cache)),
       menu_actions_(AvatarMenuActions::Create()),
+#if defined(ENABLE_MANAGED_USERS)
+      supervised_user_observer_(this),
+#endif
       profile_info_(profile_cache),
       observer_(observer),
       browser_(browser) {
   DCHECK(profile_info_);
   // Don't DCHECK(browser_) so that unit tests can reuse this ctor.
 
   ActiveBrowserChanged(browser_);
 
   // Register this as an observer of the info cache.
   registrar_.Add(this, chrome::NOTIFICATION_PROFILE_CACHED_INFO_CHANGED,
       content::NotificationService::AllSources());
+
+#if defined(ENABLE_MANAGED_USERS)
+  // Register this as an observer of the SupervisedUserService to be notified
+  // of changes to the custodian info.
+  if (browser_) {
+    supervised_user_observer_.Add(
+        SupervisedUserServiceFactory::GetForProfile(browser_->profile()));
+  }
+#endif
 }
 
 AvatarMenu::~AvatarMenu() {
 }
 
 AvatarMenu::Item::Item(size_t menu_index,
                        size_t profile_index,
                        const gfx::Image& icon)
     : icon(icon),
       active(false),
@@ skipping 150 matching lines @@
 }
 
 void AvatarMenu::Observe(int type,
                          const content::NotificationSource& source,
                          const content::NotificationDetails& details) {
   DCHECK_EQ(chrome::NOTIFICATION_PROFILE_CACHED_INFO_CHANGED, type);
   RebuildMenu();
   if (observer_)
     observer_->OnAvatarMenuChanged(this);
 }
+
+#if defined(ENABLE_MANAGED_USERS)
+void AvatarMenu::OnCustodianInfoChanged() {
+  RebuildMenu();
+  if (observer_)
+    observer_->OnAvatarMenuChanged(this);
+}
+#endif