Add autoclick to settings page under the accessibility section.

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;
 }
 
 #home-page-url {
   display: inline-block;
@@ skipping 384 matching lines @@
 }
 
 #keyboard-overlay .option-value > select {
   width: 100%;
 }
 
 #keyboard-overlay table {
   /* Same as .settings-row {margin}. */
   -webkit-border-vertical-spacing: 0.65em;
 }
+
+#accessibility-autoclick {
+  overflow: hidden;
+  /* Same as controlled-setting-with-label. */
+  padding-bottom: 7px;
+  padding-top: 7px;
+}
+
+#accessibility-autoclick .checkbox {
+  float: left;
+}
+
+html[dir=rtl] #accessibility-autoclick .checkbox {
+  float: right;
+}
+
+#accessibility-autoclick-subrow {
+  /* Same as controlled-setting-with-label > input + span. */
+  -webkit-margin-start: 0.6em;
+  float: left;
+}
+
+html[dir=rtl] #accessibility-autoclick-subrow {
+  float: right;
+}