Force save changes when Enter is pressed for the controls with buffered updates.

chrome/browser/resources/print_preview/settings/page_settings.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.
 
 cr.define('print_preview', function() {
   'use strict';
 
   /**
    * Creates a PageSettings object. This object encapsulates all settings and
    * logic related to page selection.
@@ skipping 82 matching lines @@
       fadeOutOption(this.getElement(), true);
       this.tracker.add(
           this.allRadio_, 'click', this.onAllRadioClick_.bind(this));
       this.tracker.add(
           this.customRadio_, 'click', this.onCustomRadioClick_.bind(this));
       this.tracker.add(
           this.customInput_, 'blur', this.onCustomInputBlur_.bind(this));
       this.tracker.add(
           this.customInput_, 'focus', this.onCustomInputFocus_.bind(this));
       this.tracker.add(
+          this.customInput_, 'keydown', this.onCustomInputKeyDown_.bind(this));
+      this.tracker.add(
           this.customInput_, 'keyup', this.onCustomInputKeyUp_.bind(this));
       this.tracker.add(
           this.pageRangeTicketItem_,
           print_preview.ticket_items.TicketItem.EventType.CHANGE,
           this.onPageRangeTicketItemChange_.bind(this));
     },
 
     /** @override */
     exitDocument: function() {
       print_preview.Component.prototype.exitDocument.call(this);
@@ skipping 68 matching lines @@
     onCustomInputFocus_: function() {
       this.customRadio_.checked = true;
       this.pageRangeTicketItem_.updateValue(this.customInput_.value);
     },
 
     /**
      * Called when a key is pressed on the custom input.
      * @param {Event} event Contains the key that was pressed.
      * @private
      */
+    onCustomInputKeyDown_: function(event) {
+      if (event.keyCode == 13 /*enter*/) {
+        if (this.customInputTimeout_) {
+          clearTimeout(this.customInputTimeout_);
+          this.customInputTimeout_ = null;
+        }
+        this.pageRangeTicketItem_.updateValue(this.customInput_.value);
+      }
+    },
+
+    /**
+     * Called when a key is pressed on the custom input.
+     * @param {Event} event Contains the key that was pressed.
+     * @private
+     */
     onCustomInputKeyUp_: function(event) {
       if (this.customInputTimeout_) {
         clearTimeout(this.customInputTimeout_);
+        this.customInputTimeout_ = null;
       }
-      if (event.keyIdentifier == 'Enter') {
-        this.pageRangeTicketItem_.updateValue(this.customInput_.value);
-      } else {
+      if (event.keyCode != 13 /*enter*/) {
         this.customRadio_.checked = true;
         this.customInputTimeout_ = setTimeout(
             this.onCustomInputTimeout_.bind(this),
             PageSettings.CUSTOM_INPUT_DELAY_);
       }
     },
 
     /**
      * Called after a delay following a key press in the custom input.
      * @private
@@ skipping 28 matching lines @@
         fadeOutOption(this.getElement());
       }
     }
   };
 
   // Export
   return {
     PageSettings: PageSettings
   };
 });