[DevTools] Typed events and event listeners.

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 513 matching lines @@
    */
   _hideTabElement(tab) {
     this._tabsElement.removeChild(tab.tabElement);
     tab._shown = false;
   }
 
   _createDropDownButton() {
     var dropDownContainer = createElementWithClass('div', 'tabbed-pane-header-tabs-drop-down-container');
     dropDownContainer.createChild('div', 'glyph');
     this._dropDownMenu = new UI.DropDownMenu(dropDownContainer);
-    this._dropDownMenu.addEventListener(UI.DropDownMenu.Events.ItemSelected, this._dropDownMenuItemSelected, this);
+    this._dropDownMenu.addEventListener(UI.DropDownMenu.ItemSelectedEvent, this._dropDownMenuItemSelected, this);
 
     return dropDownContainer;
   }
 
   /**
-   * @param {!Common.Event} event
+   * @param {!UI.DropDownMenu.ItemSelectedEvent} event
    */
   _dropDownMenuItemSelected(event) {
-    var tabId = /** @type {string} */ (event.data);
+    var tabId = event.id;
     this._lastSelectedOverflowTab = this._tabsById[tabId];
     this.selectTab(tabId, true);
   }
 
   _totalWidth() {
     return this._headerContentsElement.getBoundingClientRect().width;
   }
 
   /**
    * @return {number}
@@ skipping 655 matching lines @@
    * @param {!Array.<string>} ids
    */
   closeTabs(tabbedPane, ids) {},
 
   /**
    * @param {string} tabId
    * @param {!UI.ContextMenu} contextMenu
    */
   onContextMenu(tabId, contextMenu) {}
 };