Simplify the incognito NTP.

chrome/browser/resources/incognito_tab.css

+/**
+ * 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.
+ */
+
 body {
   margin: 10px 8px;
 }
+
+.icon {
+  position: absolute;
+  top: -7px;
+}
+
 html[dir="ltr"] .icon {
-  float: right;
-  margin: 0 6px 0 3px;
   -webkit-transform: scale(-1, 1);
+  left: auto;
+  right: 10px;
 }
+
 html[dir="rtl"] .icon {
-  float: left;
-  margin: 0 3px 0 6px;
+  left: 10px;
+  right: auto;
 }
+
 .content {
+  background-color: #eaeaea;
   border-radius: 5px 5px;
-  background-color: #eee;
+  border: 1px solid #d9d9d9;
+  box-shadow: 0 3px 5px rgba(0,0,0,0.25);
   color: black;
-  padding: 10px;
-  max-width: 600px;
   margin-left: auto;
   margin-right: auto;
   margin-top: 66px;
+  max-width: 600px;
+  padding: 10px;
+  position: relative;
 }
-.extensionsmessage {
-  color: black;
-  padding: 10px;
-  max-width: 600px;
-  margin-left: auto;
-  margin-right: auto;
-  margin-top: 5px;
+
+h1 {
+  font-size: 1.25em;
+  margin: 0;
 }
-.extensionicon {
-  float: left;
-  margin: 10px 5px 0 0;
-  width: 30px;
+
+p {
+  margin: 0.5em 0;
 }