Update CrOS to use scoped_refptr<T>::get() rather than implicit "operator T*"

chrome/browser/ui/webui/chromeos/login/signin_screen_handler.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/ui/webui/chromeos/login/signin_screen_handler.h"
 
 #include "base/callback.h"
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 320 matching lines @@
       network_state_informer_(network_state_informer),
       weak_factory_(this),
       webui_visible_(false),
       preferences_changed_delayed_(false),
       error_screen_actor_(error_screen_actor),
       is_first_update_state_call_(true),
       offline_login_active_(false),
       last_network_state_(NetworkStateInformer::UNKNOWN),
       has_pending_auth_ui_(false),
       ignore_next_user_abort_frame_error_(false) {
-  DCHECK(network_state_informer_);
+  DCHECK(network_state_informer_.get());
   DCHECK(error_screen_actor_);
   network_state_informer_->AddObserver(this);
   CrosSettings::Get()->AddSettingsObserver(kAccountsPrefAllowNewUser, this);
   CrosSettings::Get()->AddSettingsObserver(kAccountsPrefAllowGuest, this);
 
   registrar_.Add(this,
                  chrome::NOTIFICATION_AUTH_NEEDED,
                  content::NotificationService::AllSources());
   registrar_.Add(this,
                  chrome::NOTIFICATION_AUTH_SUPPLIED,
@@ skipping 1284 matching lines @@
   if (!cros_settings)
     return false;
 
   // Offline login is allowed only when user pods are hidden.
   bool show_pods;
   cros_settings->GetBoolean(kAccountsPrefShowUserNamesOnSignIn, &show_pods);
   return !show_pods;
 }
 
 }  // namespace chromeos