Revert of DevTools: keep widgets in widget hierarchy upon hide, split attach/detach cycle from show/hide.

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 90 matching lines @@
 
         this._restoreTabIndexOnElements();
 
         delete WebInspector.Dialog._instance;
     },
 
     addCloseButton: function()
     {
         var closeButton = this.contentElement.createChild("div", "dialog-close-button", "dt-close-button");
         closeButton.gray = true;
-        closeButton.addEventListener("click", this.detach.bind(this), false);
+        closeButton.addEventListener("click", this.detach.bind(this, false), false);
     },
 
     /**
      * @param {number=} positionX
      * @param {number=} positionY
      */
     setPosition: function(positionX, positionY)
     {
         this._defaultPositionX = positionX;
         this._defaultPositionY = positionY;
@@ skipping 159 matching lines @@
 {
     return WebInspector.Dialog._modalHostView;
 };
 
 WebInspector.Dialog.modalHostRepositioned = function()
 {
     if (WebInspector.Dialog._instance)
         WebInspector.Dialog._instance._position();
 };