Minimal support for OOBE/login for chrome-athena

chrome/browser/chromeos/preferences.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/chromeos/preferences.h"
 
 #include <vector>
 
 #include "ash/autoclick/autoclick_controller.h"
 #include "ash/magnifier/magnifier_constants.h"
@@ skipping 512 matching lines @@
       UMA_HISTOGRAM_BOOLEAN(
           "FileBrowser.DownloadDestination.IsGoogleDrive.Changed",
           default_download_to_drive);
     else if (reason == REASON_INITIALIZATION)
       UMA_HISTOGRAM_BOOLEAN(
           "FileBrowser.DownloadDestination.IsGoogleDrive.Started",
           default_download_to_drive);
   }
   if (reason != REASON_PREF_CHANGED ||
       pref_name == prefs::kTouchHudProjectionEnabled) {
-    if (user_is_active) {
+    if (user_is_active && ash::Shell::HasInstance()) {
       const bool enabled = touch_hud_projection_enabled_.GetValue();
       ash::Shell::GetInstance()->SetTouchHudProjectionEnabled(enabled);
     }
   }
 
   if (reason != REASON_PREF_CHANGED ||
       pref_name == prefs::kLanguageXkbAutoRepeatEnabled) {
     if (user_is_active) {
       const bool enabled = xkb_auto_repeat_enabled_.GetValue();
       input_method::InputMethodManager::Get()
@@ skipping 120 matching lines @@
   touch_hud_projection_enabled_.SetValue(enabled);
 }
 
 void Preferences::ActiveUserChanged(const user_manager::User* active_user) {
   if (active_user != user_)
     return;
   ApplyPreferences(REASON_ACTIVE_USER_CHANGED, "");
 }
 
 }  // namespace chromeos