Remove the idle logout dialog extra border.

chrome/browser/chromeos/ui/idle_logout_dialog_view.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/ui/idle_logout_dialog_view.h"
 
 #include "ash/shell.h"
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/strings/string_number_conversions.h"
@@ skipping 131 matching lines @@
 void IdleLogoutDialogView::Show() {
   KioskModeSettings* settings =
         IdleLogoutDialogView::provider_->GetKioskModeSettings();
 
   // Setup the countdown label before showing.
   countdown_end_time_ = base::Time::Now() +
       settings->GetIdleLogoutWarningDuration();
 
   UpdateCountdown();
 
-  views::Widget::CreateWindowWithContext(this,
-                                         ash::Shell::GetPrimaryRootWindow());
+  views::DialogDelegate::CreateDialogWidget(
+      this, ash::Shell::GetPrimaryRootWindow(), NULL);
   GetWidget()->SetAlwaysOnTop(true);
   GetWidget()->Show();
 
   // Update countdown every 1 second.
   timer_.Start(FROM_HERE,
                IdleLogoutDialogView::provider_->GetCountdownUpdateInterval(),
                this,
                &IdleLogoutDialogView::UpdateCountdown);
 }
 
@@ skipping 38 matching lines @@
   return g_instance;
 }
 
 // static
 void IdleLogoutDialogView::set_settings_provider(
     IdleLogoutSettingsProvider* provider) {
   provider_ = provider;
 }
 
 }  // namespace chromeos