Print Preview: Show error message if text is typed in Copies section

chrome/browser/resources/print_preview/data/ticket_items/scaling.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.ticket_items', function() {
   'use strict';
 
   /**
    * Scaling ticket item whose value is a {@code string} that indicates what the
    * scaling (in percent) of the document should be. The ticket item is backed
    * by a string since the user can textually input the scaling value.
    * @param {!print_preview.AppState} appState App state to persist item value.
    * @param {!print_preview.DocumentInfo} documentInfo Information about the
    *     document to print.
    * @param {!print_preview.DestinationStore} destinationStore Used to determine
    *     whether fit to page should be available.
    * @constructor
    * @extends {print_preview.ticket_items.TicketItem}
    */
   function Scaling(appState, destinationStore, documentInfo) {
     print_preview.ticket_items.TicketItem.call(
         this,
         appState,
         print_preview.AppState.Field.SCALING,
         destinationStore,
         documentInfo);
   };
 
-  /**
-   * Maximum scaling percentage
-   * @private {number}
-   * @const
-   */
-  Scaling.MAX_VAL = 200;
-
-  /**
-   * Minimum scaling percentage
-   * @private {number}
-   * @const
-   */
-  Scaling.MIN_VAL = 10;
-
   Scaling.prototype = {
     __proto__: print_preview.ticket_items.TicketItem.prototype,
 
     /** @override */
     wouldValueBeValid: function(value) {
-      if (/[^\d]+/.test(value)) {
-        return false;
-      }
-      var scaling = parseInt(value, 10);
-      return scaling >= Scaling.MIN_VAL && scaling <= Scaling.MAX_VAL;
-    },
+      return true;
+   },
 
     /** @override */
     isValueEqual: function(value) {
       return this.getValueAsNumber() == value;
     },
 
-    /**
-     * @param {number} The desired scaling percentage.
-     * @return {number} Nearest valid scaling percentage
-     */
-    getNearestValidValue: function(value) {
-      return Math.min(Math.max(value, Scaling.MIN_VAL), Scaling.MAX_VAL);
-    },
-
     /** @override */
     isCapabilityAvailable: function() {
       // This is not a function of the printer, but should be disabled if we are
       // saving a PDF to a PDF.
       var knownSizeToSaveAsPdf =
           (!this.getDocumentInfoInternal().isModifiable ||
            this.getDocumentInfoInternal().hasCssMediaStyles) &&
            this.getSelectedDestInternal() &&
            this.getSelectedDestInternal().id ==
                print_preview.Destination.GooglePromotedId.SAVE_AS_PDF;
@@ skipping 14 matching lines @@
     getCapabilityNotAvailableValueInternal: function() {
       return '100';
     },
   };
 
   // Export
   return {
     Scaling: Scaling
   };
 });