Fix pincode versus passkey issues for Bluetooth pairing.

chrome/browser/resources/options2/chromeos/bluetooth.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. */
 
 .bluetooth-device-list {
   margin: 10px;
   padding: 5px 10px;
 }
 
 .bluetooth-device[paired] {
@@ skipping 56 matching lines @@
 }
 
 /* Force the message to be vertical centered so that a shorter message does not
    look out of place when there is room for a much longer message. */
 #bluetooth-pairing-message-contents {
   display: table-cell;
   vertical-align: middle;
 }
 
 #bluetooth-pairing-instructions,
-#bluetooth-passkey {
-  margin: 10px;
+#bluetooth-pairing-passkey-display,
+#bluetooth-pairing-passkey-entry,
+#bluetooth-pairing-pincode-entry,
+#bluetooth-passkey,
+#bluetooth-pincode {
   text-align: center;
 }
 
+#bluetooth-pairing-instructions {
+  margin: 10px;
+}
+
 #bluetooth-pairing-passkey-display,
-#bluetooth-pairing-passkey-entry  {
+#bluetooth-pairing-passkey-entry,
+#bluetooth-pairing-pincode-entry {
   margin: 40px 0;
-  text-align: center;
 }
 
 .bluetooth-keyboard-button {
   -webkit-padding-end: 15px;
   -webkit-padding-start: 15px;
   background-image: -webkit-gradient(linear,
                                      left top,
                                      left bottom,
                                      color-stop(0, #e9e9e9),
                                      color-stop(1, #f5f5f5));
@@ skipping 39 matching lines @@
   border: 1px solid #ccc;
   box-shadow: 0 0 0 1px #888,
               inset 0 1px 1px 1px #fff,
               inset 0 -1px 1px 1px #eee;
   color: #222;
 }
 
 .bluetooth-keyboard-button.key-pin {
   color: #222;
 }