[Harmony] Harmonize Bluetooth dialogs.

chrome/browser/resources/options/chromeos/bluetooth_pair_device_overlay.js

 // 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.
 
 /**
  * Enumeration of possible states during pairing.  The value associated with
  * each state maps to a localized string in the global variable
  * |loadTimeData|.
  * @enum {string}
  */
@@ skipping 162 matching lines @@
             inputField.value.length == 0;
       };
       $('bluetooth-pincode').oninput = function() {
         $('bluetooth-pair-device-connect-button').disabled =
             $('bluetooth-pincode').value.length == 0;
       };
       $('bluetooth-passkey').addEventListener('keydown',
           this.keyDownEventHandler_.bind(this));
       $('bluetooth-pincode').addEventListener('keydown',
           this.keyDownEventHandler_.bind(this));
+      $('bluetooth-pairing-close-button').addEventListener('click',
+          this.onClose_.bind(this));
     },
 
     /** @override */
     didClosePage: function() {
       if (this.event_ &&
           this.event_.pairing != BluetoothPairingEventType.DISMISSED &&
           this.event_.pairing != BluetoothPairingEventType.CONNECT_FAILED) {
         this.event_.pairing = BluetoothPairingEventType.CANCELED;
         var options = {
           device: this.event_.device,
@@ skipping 136 matching lines @@
     keyDownEventHandler_: function(event) {
       /** @const */ var ENTER_KEY_CODE = 13;
       if (event.keyCode == ENTER_KEY_CODE) {
         var button = $('bluetooth-pair-device-connect-button');
         if (!button.hidden)
           button.click();
       }
     },
 
     /**
+     * Handles the click event on the close button.
+     * @param {Event} event A click down event.
+     * @private
+     */
+    onClose_: function(event) {
+      event.preventDefault();
+      chrome.send('dialogClose');
+    },
+
+    /**
      * Updates the visibility of elements in the dialog.
      * @param {Array<string>} list List of conditionally visible elements that
      *     are to be made visible.
      * @private
      */
     displayElements_: function(list) {
       var enabled = {};
       for (var i = 0; i < list.length; i++) {
         var key = list[i];
         enabled[key] = true;
@@ skipping 238 matching lines @@
         dialog.event_.pairing = BluetoothPairingEventType.DISMISSED;
       PageManager.closeOverlay();
     }
   };
 
   // Export
   return {
     BluetoothPairing: BluetoothPairing
   };
 });