DevTools: remove invalidateSize from Widget, make show/hideWidget receive no params.

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

 /*
  * Copyright (C) 2010 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 730 matching lines @@
     this._hideTab(this._currentTab);
     delete this._currentTab;
   }
 
   /**
    * @param {!UI.TabbedPaneTab} tab
    */
   _showTab(tab) {
     tab.tabElement.classList.add('selected');
     tab.tabElement.setAttribute('aria-selected', 'true');
-    tab.view.showWidget(this.element);
+    tab.view.showWidget();
     this._updateTabSlider();
   }
 
   _updateTabSlider() {
     if (!this._currentTab || !this._sliderEnabled)
       return;
     var left = 0;
     for (var i = 0; i < this._tabs.length && this._currentTab !== this._tabs[i] && this._tabs[i]._shown; i++)
       left += this._tabs[i]._measuredWidth;
     var sliderWidth = this._currentTab._shown ? this._currentTab._measuredWidth : this._dropDownButton.offsetWidth;
@@ skipping 448 matching lines @@
    * @param {!Array.<string>} ids
    */
   closeTabs(tabbedPane, ids) {},
 
   /**
    * @param {string} tabId
    * @param {!UI.ContextMenu} contextMenu
    */
   onContextMenu(tabId, contextMenu) {}
 };