cros: Tighten profile loading

chrome/browser/chromeos/accessibility/accessibility_manager.cc

 // Copyright (c) 2013 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/chromeos/accessibility/accessibility_manager.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <memory>
@@ skipping 1254 matching lines @@
   UpdateSwitchAccessFromPref();
 
   // Update the panel height in the shelf layout manager when the profile
   // changes, since the shelf layout manager doesn't exist in the login profile.
   if (chromevox_panel_)
     chromevox_panel_->UpdatePanelHeight();
 }
 
 void AccessibilityManager::ActiveUserChanged(
     const user_manager::User* active_user) {
-  SetProfile(ProfileManager::GetActiveUserProfile());
+  if (active_user && active_user->is_profile_created())
+    SetProfile(ProfileManager::GetActiveUserProfile());
 }
 
 void AccessibilityManager::OnFullscreenStateChanged(bool is_fullscreen,
                                                     aura::Window* root_window) {
   if (chromevox_panel_)
     chromevox_panel_->UpdateWidgetBounds();
 }
 
 void AccessibilityManager::SetProfileForTest(Profile* profile) {
   SetProfile(profile);
@@ skipping 244 matching lines @@
   if (!extension_registry_observer_.IsObserving(registry) && !id.empty())
     extension_registry_observer_.Add(registry);
 }
 
 void AccessibilityManager::SetSwitchAccessKeys(const std::set<int>& key_codes) {
   if (switch_access_enabled_)
     switch_access_event_handler_->SetKeysToCapture(key_codes);
 }
 
 }  // namespace chromeos