cros: Allow pin keyboard to keep focus without popping up the pin keyboard.

chrome/browser/resources/settings/people_page/setup_pin_dialog.js

 // Copyright 2016 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.
 
 /**
  * @fileoverview
  * 'settings-setup-pin-dialog' is the settings page for choosing a PIN.
  *
  * Example:
  *
@@ skipping 60 matching lines @@
   },
 
   /** @override */
   attached: function() {
     this.resetState_();
   },
 
   open: function() {
     this.$.dialog.showModal();
     this.$.pinKeyboard.focus();
+
+    // Each tap of the PIN keyboard button transfers focus to the PIN input,
+    // which will keep opening the virtual keyboard. Disable the virtual
+    // keyboard while this dialog is present.
+    chrome.send('SetForceDisableVirtualKeyboard', [true]);
   },
 
   close: function() {
     if (this.$.dialog.open)
       this.$.dialog.close();
 
     this.resetState_();
+
+    // Renable the virtual keyboard.
+    chrome.send('SetForceDisableVirtualKeyboard', [false]);
   },
 
   /**
    * Resets the element to the initial state.
    * @private
    */
   resetState_: function() {
     this.initialPin_ = '';
     this.pinKeyboardValue_ = '';
     this.enableSubmit_ = false;
@@ skipping 154 matching lines @@
    * @private
    * @param {boolean} isConfirmStep
    * @return {string}
    */
   getContinueMessage_: function(isConfirmStep) {
     return this.i18n(isConfirmStep ? 'confirm' : 'configurePinContinueButton');
   },
 });
 
 })();