[Media Router WebUI] Fix escape bug in filter menu.

chrome/browser/resources/media_router/media_router_data.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.
 
 // Any strings used here will already be localized. Values such as
 // CastMode.type or IDs will be defined elsewhere and determined later.
 
 cr.exportPath('media_router');
 
 /**
  * This corresponds to the C++ MediaCastMode, with the exception of AUTO.
  * See below for details. Note to support fast bitset operations, the values
  * here are (1 << [corresponding value in MR]).
  * @enum {number}
  */
 media_router.CastModeType = {
   // Note: AUTO mode is only used to configure the sink list container to show
   // all sinks. Individual sinks are configured with a specific cast mode
   // (DEFAULT, TAB_MIRROR, DESKTOP_MIRROR).
   AUTO: -1,
   DEFAULT: 0x1,
   TAB_MIRROR: 0x2,
   DESKTOP_MIRROR: 0x4,
 };
 
 /**
- * The ESC key maps to keycode '27'.
- * @const {number}
+ * The ESC key maps to KeyboardEvent.key value 'Escape'.
+ * @const {string}
  */
-media_router.KEYCODE_ESC = 27;
+media_router.KEY_ESC = 'Escape';
 
 /**
  * This corresponds to the C++ MediaRouterMetrics
  * MediaRouterRouteCreationOutcome.
  * @enum {number}
  */
 media_router.MediaRouterRouteCreationOutcome = {
   SUCCESS: 0,
   FAILURE_NO_ROUTE: 1,
   FAILURE_INVALID_SINK: 2,
@@ skipping 205 matching lines @@
 
   return {
     AUTO_CAST_MODE: AUTO_CAST_MODE,
     CastMode: CastMode,
     Issue: Issue,
     Route: Route,
     Sink: Sink,
     TabInfo: TabInfo,
   };
 });