[Media Router WebUI] Update ESC handling.

chrome/browser/resources/media_router/media_router.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.
 
 <include src="media_router_data.js">
 <include src="media_router_ui_interface.js">
 
 // Handles user events for the Media Router UI.
 cr.define('media_router', function() {
   'use strict';
@@ skipping 38 matching lines @@
     container.addEventListener('report-sink-click-time',
                                onSinkClickTimeReported);
     container.addEventListener('report-sink-count', onSinkCountReported);
     container.addEventListener('report-resolved-route',
                                onReportRouteCreationOutcome);
     container.addEventListener('show-initial-state', onShowInitialState);
     container.addEventListener('sink-click', onSinkClick);
     container.addEventListener('start-casting-to-route-click',
                                onStartCastingToRouteClick);
 
-    // Pressing the ESC key closes the dialog.
-    document.addEventListener('keydown', function(e) {
-      if (e.keyCode == media_router.KEYCODE_ESC) {
-        container.maybeReportUserFirstAction(
-            media_router.MediaRouterUserAction.CLOSE);
-      }
-    });
-
     window.addEventListener('blur', onWindowBlur);
   }
 
   /**
    * Reports the selected cast mode.
    * Called when the user selects a cast mode from the picker.
    *
    * @param {!Event} event
    * Parameters in |event|.detail:
    *   castModeType - type of cast mode selected by the user.
@@ skipping 262 matching lines @@
   function onWindowBlur() {
     media_router.browserApi.reportBlur();
   }
 
   return {
     initialize: initialize,
   };
 });
 
 window.addEventListener('load', media_router.initialize);