Change the idle logout dialog over to use views.

chrome/browser/resources/chromeos/idle_logout_dialog.css

Index: chrome/browser/resources/chromeos/idle_logout_dialog.css
diff --git a/chrome/browser/resources/chromeos/idle_logout_dialog.css b/chrome/browser/resources/chromeos/idle_logout_dialog.css
deleted file mode 100644
index 03395ad01407663e260f28b6988919c7f45fb687..0000000000000000000000000000000000000000
--- a/chrome/browser/resources/chromeos/idle_logout_dialog.css
+++ /dev/null
@@ -1,28 +0,0 @@
-/* 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.
- */
-
-html, body {
-  font-family: Arial, Helvetica, sans-serif;
-  font-size: 13px;
-  height: 100%;
-  margin: 0;
-  overflow: hidden;
-  width: 100%;
-}
-
-#main-box {
-  border: 1px solid black;
-}
-
-#title {
-  background: -webkit-linear-gradient(left, white, #dadada);
-  border-bottom: 1px solid #bbb;
-  font-weight: bold;
-  padding: 10px;
-}
-
-#warning {
-  padding: 10px;
-}