Print Preview: Fix compile errors in settings/ directory

chrome/browser/resources/print_preview/settings/scaling_settings.js

 // Copyright (c) 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.
 
 cr.define('print_preview', function() {
   'use strict';
 
   /**
    * Component that renders the scaling settings UI.
-   * @param {!print_preview.ticket_items.scalingTicketItem} scalingTicketItem
+   * @param {!print_preview.ticket_items.Scaling} scalingTicketItem
    *     Used to read and write the scaling value.
-   * @param {!print_preview.ticket_items.fitToPageticketItem}
+   * @param {!print_preview.ticket_items.FitToPage}
    *     fitToPageTicketItem Used to read the fit to page value.
    * @constructor
    * @extends {print_preview.SettingsSection}
    */
   function ScalingSettings(scalingTicketItem, fitToPageTicketItem) {
     print_preview.SettingsSection.call(this);
 
     /**
      * Used to read and write the scaling value.
      * @private {!print_preview.ticket_items.Scaling}
@@ skipping 23 matching lines @@
      * @private {boolean}
      */
     this.isEnabled_ = true;
 
     /**
      * The textfield input element
      * @private {HTMLElement}
      */
     this.inputField_ = null;
 
-  };
+  }
 
   /**
    * Delay in milliseconds before processing the textfield.
    * @private {number}
    * @const
    */
   ScalingSettings.TEXTFIELD_DELAY_MS_ = 250;
 
   ScalingSettings.prototype = {
     __proto__: print_preview.SettingsSection.prototype,
@@ skipping 13 matching lines @@
       this.inputField_.disabled = !isEnabled;
       this.isEnabled_ = isEnabled;
       if (isEnabled)
         this.updateState_();
     },
 
     /** @override */
     enterDocument: function() {
       this.inputField_ = this.getChildElement('input.user-value');
       print_preview.SettingsSection.prototype.enterDocument.call(this);
+      var inputField = assert(this.inputField_);
       this.tracker.add(
-          this.inputField_,
+          inputField,
           'keydown',
           this.onTextfieldKeyDown_.bind(this));
       this.tracker.add(
-          this.inputField_,
+          inputField,
           'input',
           this.onTextfieldInput_.bind(this));
       this.tracker.add(
-          this.inputField_,
+          inputField,
           'blur',
           this.onTextfieldBlur_.bind(this));
       this.tracker.add(
           this.scalingTicketItem_,
           print_preview.ticket_items.TicketItem.EventType.CHANGE,
           this.updateState_.bind(this));
       this.tracker.add(
           this.fitToPageTicketItem_,
           print_preview.ticket_items.TicketItem.EventType.CHANGE,
           this.onFitToPageChange_.bind(this));
     },
 
     /**
      * @return {boolean} true if fit to page is available and selected.
      * @private
      */
     isFitToPageSelected: function() {
       return this.fitToPageTicketItem_.isCapabilityAvailable() &&
-             this.fitToPageTicketItem_.getValue();
+             !!this.fitToPageTicketItem_.getValue();
     },
 
     /**
      * @return {number} The current input field value as an integer.
      * @private
      */
     getInputAsNumber: function() {
       return this.inputField_.valueAsNumber;
     },
 
@@ skipping 148 matching lines @@
       }
     },
 
   };
 
   // Export
   return {
     ScalingSettings: ScalingSettings
   };
 });