Video Player: Enable chromecast support by default

ui/file_manager/video_player/js/cast/caster.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.
 
 'use strict';
 
 // This hack prevents a bug on the cast extension.
 // TODO(yoshiki): Remove this once the cast extension supports Chrome apps.
 // Although localStorage in Chrome app is not supported, but it's used in the
 // cast extension. This line prevents an exception on using localStorage.
 window.__defineGetter__('localStorage', function() { return {}; });
 
-/**
- * @type {string}
- * @const
- */
-var CAST_COMMAND_LINE_FLAG = 'enable-video-player-chromecast-support';
-
 // THIS IS A TEST APP.
 // TODO(yoshiki): Fix this before launch.
 var APPLICATION_ID = '214CC863';
 
-chrome.commandLinePrivate.hasSwitch(CAST_COMMAND_LINE_FLAG, function(result) {
-  if (!result)
-    return;
-
+util.addPageLoadHandler(function() {
   // TODO(yoshiki): Check if the Google Cast extension is installed or not.
   // If not installed, we should skip all cast-related functionality.
 
   loadCastAPI(initializeApi);
 });
 
 /**
  * Executes the given callback after the cast extension is initialized.
  * @param {function} callback Callback (executed asynchronously).
  * @param {boolean=} opt_secondTry Spericy try if it's second call after
@@ skipping 93 matching lines @@
     }
 
     player.setCastList(receivers);
   } else if (availability == chrome.cast.ReceiverAvailability.UNAVAILABLE) {
     player.setCastList([]);
   } else {
     console.error('Unexpected response in onReceiver.', arguments);
     player.setCastList([]);
   }
 }