Added strings of i18n and made the pin-keyboard work for rtl lang.

ui/login/account_picker/user_pod_row.css

 /* Copyright 2014 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.
  *
  * This is the stylesheet used by user pods row of account picker UI.
  */
 
 podrow {
   /* Temporarily disabled because animation interferes with updating screen's
    size. */
@@ skipping 48 matching lines @@
 }
 
 .pod.faded {
   opacity: .75;
 }
 
 podrow[ncolumns='6'] .pod {
   transform: scale3d(0.8, 0.8, 0.8);
 }
 
+html[dir=rtl] .pin-keyboard-input-non-pin {
+  direction: rtl;
+}
+
 .pod.focused {
   /* Focused pod has the same size no matter how many pods. */
   cursor: default;
   transform: scale3d(1, 1, 1) !important;
   z-index: 1;
 }
 
 .pod.focused[auth-type='userClick'] {
   cursor: pointer;
 }
@@ skipping 798 matching lines @@
   -webkit-animation: ellipsis-component2 1.5s infinite;
 }
 
 @-webkit-keyframes ellipsis-component2 {
   0% { opacity: 0; }
   25% { opacity: 0; }
   50% { opacity: 0; }
   75% { opacity: 1; }
   100% { opacity: 0; }
 }