Export vendor capabilities to the CJT ticket.

chrome/browser/resources/print_preview/common/overlay.js

 // Copyright 2014 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';
 
   /**
    * Modal dialog base component.
    * @param {!print_preview.MetricsContext} metricsContext Metrics
@@ skipping 22 matching lines @@
 
       this.getElement().addEventListener('webkitTransitionEnd', function f(e) {
         if (e.target == e.currentTarget && e.propertyName == 'opacity' &&
             e.target.classList.contains('transparent')) {
           setIsVisible(e.target, false);
         }
       });
 
       this.getElement().addEventListener('keydown', function f(e) {
         // Escape pressed -> cancel the dialog.
-        if (e.keyCode == 27 && !e.shiftKey && !e.ctrlKey && !e.altKey &&
-            !e.metaKey) {
-          e.stopPropagation();
-          e.preventDefault();
-          this.cancel();
+        if (!e.shiftKey && !e.ctrlKey && !e.altKey && !e.metaKey) {
+          if (e.keyCode == 27) {
+            e.stopPropagation();
+            e.preventDefault();
+            this.cancel();
+          } else if (e.keyCode == 13) {
+            var activeElementTag = document.activeElement ?
+                document.activeElement.tagName.toUpperCase() : '';
+            if (activeElementTag != 'BUTTON' && activeElementTag != 'SELECT') {
+              if (this.onEnterPressedInternal()) {
+                e.stopPropagation();
+                e.preventDefault();
+              }
+            }
+          }
         }
       }.bind(this));
 
       this.tracker.add(
           this.getChildElement('.page > .close-button'),
           'click',
           this.cancel.bind(this));
 
       this.tracker.add(
           this.getElement(), 'click', this.onOverlayClick_.bind(this));
@@ skipping 32 matching lines @@
     /**
      * @param {boolean} isVisible Whether the component is visible.
      * @protected
      */
     onSetVisibleInternal: function(isVisible) {},
 
     /** @protected */
     onCancelInternal: function() {},
 
     /**
+     * @return {boolean} Whether the event was handled.
+     * @protected
+     */
+    onEnterPressedInternal: function() {
+      return false;
+    },
+
+    /**
      * Called when the overlay is clicked. Pulses the page.
      * @param {Event} e Contains the element that was clicked.
      * @private
      */
     onOverlayClick_: function(e) {
       if (e.target && e.target.classList.contains('overlay'))
         e.target.querySelector('.page').classList.add('pulse');
     },
 
     /**
      * Called when an animation ends on the page.
      * @param {Event} e Contains the target done animating.
      * @private
      */
     onAnimationEnd_: function(e) {
       if (e.target && e.animationName == 'pulse')
         e.target.classList.remove('pulse');
     }
   };
 
   // Export
   return {
     Overlay: Overlay
   };
 });