[NTP4] Fix theme and bookmarks bar notifications.

chrome/browser/resources/new_incognito_tab_theme.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.
+ */
+
 html {
+  background-attachment: fixed;
+  background-color: $2;

[Dan Beam, 2012/03/27 10:30:13]

figured I'd fix style nits while around...

   background-image: url(chrome://theme/IDR_THEME_NTP_BACKGROUND?$1);
-  background-color: $2;
   background-position: $3;
   background-repeat: $5;
   height: 100%;
   overflow: auto;
-  background-attachment: fixed;
 }
 
 html[bookmarkbarattached='true'] {
   background-position: $4;
 }