Better fullscreen handling for Chrome OS Video Player

chrome/browser/resources/file_manager/js/mock_chrome.js

 // Copyright (c) 2012 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.
 
 function MockEventSource() {
   this.listeners_ = [];
 }
 
 MockEventSource.prototype.addListener = function(listener) {
   this.listeners_.push(listener);
@@ skipping 241 matching lines @@
         metadata.isReadOnly = true;
       }
     } else if (urlStartsWith('/gdata')) {
       metadata.deviceType = 'network';
     } else {
       metadata.deviceType = 'file';
     }
     callback(metadata);
   },
 
+  toggleFullscreen: function() {
+    if (document.webkitIsFullScreen)
+      document.webkitCancelFullScreen();
+    else
+      document.body.webkitRequestFullScreen();
+  },
+
+  isFullscreen: function(callback) {
+    setTimeout(callback, 0, document.webkitIsFullScreen);
+  },
+
   /**
    * Return localized strings.
    */
   getStrings: function(callback) {
     // Keep this list in sync with the strings in generated_resources.grd and
     // extension_file_browser_private_api.cc!
     callback({
       // These two are from locale_settings*.grd
       WEB_FONT_FAMILY: 'Chrome Droid Sans,Droid Sans Fallback,sans-serif',
       WEB_FONT_SIZE: '84%',
@@ skipping 228 matching lines @@
 
   setWindowHeight: function(height) {
     this.popup_.style.height = height + 'px';
   },
 
   closeWindow: function() {
     this.popup_.parentNode.removeChild(this.popup_);
     this.popup_ = null;
   }
 };