Options: more tweaks to android-settings strings.

chrome/browser/resources/options/browser_options.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. */
 
 #change-home-page-section {
-  margin-left: 30px;
+  -webkit-margin-start: 30px;
 }
 
 #home-page-url {
   display: inline-block;
   max-width: 400px;
   overflow: hidden;
   text-overflow: ellipsis;
   vertical-align: top;
 }
 
@@ skipping 462 matching lines @@
 
 #about-button {
   -webkit-margin-end: 30px;
 }
 
 /* An input that has no function except to take up the same amount of space as
  * a checkbox. */
 .spacer-checkbox {
   visibility: hidden;
 }
+
+#android-apps-settings {
+  -webkit-margin-start: 30px;
+}