MD Settings: Eliminate use of ES6 for Chrome OS

chrome/browser/resources/settings/bluetooth_page/bluetooth_page.js

 // Copyright 2015 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-bluetooth-page' is the settings page for managing bluetooth
  *  properties and devices.
  *
  * Example:
@@ skipping 210 matching lines @@
 
   /** @private */
   bluetoothEnabledChanged_: function() {
     // When bluetooth is enabled, auto-expand the device list.
     if (this.bluetoothEnabled_)
       this.deviceListExpanded_ = true;
   },
 
   /** @private */
   deviceListChanged_: function() {
-    for (let device of this.deviceList_) {
-      if (device.connected) {
+    for (var d = 0; d <this.deviceList_.length; ++d) {

[dpapad, 2017/01/23 19:12:53]

Space missing before |this.deviceList_.length|. Also it is more common to use
'i' for a counter variable.

[stevenjb, 2017/01/24 02:02:03]

done / ack. I tend to prefer more context relevent counter names, but if that's
confusing I'll change it.

+      if (this.deviceList_[d].connected) {
         this.deviceConnected_ = true;
         return;
       }
     }
     this.deviceConnected_ = false;
   },
 
   /** @private */
   selectedItemChanged_: function() {
     if (this.selectedItem_)
@@ skipping 375 matching lines @@
   },
 
   /**
    * @param {Event} e
    * @private
    */
   stopTap_: function(e) {
     e.stopPropagation();
   },
 });