[DevTools] Prepare UI module for closure compiler roll

third_party/WebKit/Source/devtools/front_end/ui/Dialog.js

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 138 matching lines @@
                     this._tabIndexMap.set(element, tabIndex);
                     element.tabIndex = -1;
                 }
             }
         }
     },
 
     _restoreTabIndexOnElements: function()
     {
         for (var element of this._tabIndexMap.keys())
-            element.tabIndex = this._tabIndexMap.get(element);
+            element.tabIndex = /** @type {number} */(this._tabIndexMap.get(element));
         this._tabIndexMap.clear();
     },
 
     /**
      * @param {!Event} event
      */
     _onFocus: function(event)
     {
         this.focus();
     },
@@ skipping 81 matching lines @@
 {
     return WebInspector.Dialog._modalHostView;
 };
 
 WebInspector.Dialog.modalHostRepositioned = function()
 {
     if (WebInspector.Dialog._instance)
         WebInspector.Dialog._instance._position();
 };