Files.app: Remove multi-profile related fileManagerPrivate APIs that are no more used.

ui/file_manager/video_player/js/background.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.
 
 /**
  * Icon of the video player.
  * TODO(yoshiki): Consider providing an exact size icon, instead of relying
  * on downsampling by ash.
  *
  * @type {string}
@@ skipping 114 matching lines @@
           reopen,
           fulfill.bind(null, videoPlayer));
     }.wrap());
   }.wrap()).then(function(videoPlayer) {
     var appWindow = videoPlayer.rawAppWindow;
 
     if (chrome.test)
       appWindow.contentWindow.loadMockCastExtensionForTest = true;
 
     videoPlayer.setIcon(ICON_IMAGE);
-    AppWindowWrapper.focusOnDesktop(appWindow);
+    appWindow.focus();
 
     return windowId;
   }.wrap()).catch(function(error) {
     console.error('Launch failed' + error.stack || error);
     return Promise.reject(error);
   }.wrap());
 }