Revert of [DevTools] Remove methods on Common.Event.

third_party/WebKit/Source/devtools/front_end/network/NetworkPanel.js

 /*
  * Copyright (C) 2007, 2008 Apple Inc.  All rights reserved.
  * Copyright (C) 2008, 2009 Anthony Ricaud <rik@webkit.org>
  * Copyright (C) 2011 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
@@ skipping 122 matching lines @@
   _onWindowChanged(event) {
     var startTime = Math.max(this._calculator.minimumBoundary(), event.data.startTime / 1000);
     var endTime = Math.min(this._calculator.maximumBoundary(), event.data.endTime / 1000);
     this._networkLogView.setWindow(startTime, endTime);
   }
 
   _createToolbarButtons() {
     this._panelToolbar.appendToolbarItem(UI.Toolbar.createActionButton(this._toggleRecordAction));
 
     this._clearButton = new UI.ToolbarButton(Common.UIString('Clear'), 'largeicon-clear');
-    this._clearButton.addEventListener(UI.ToolbarButton.Events.Click, this._onClearButtonClicked, this);
+    this._clearButton.addEventListener('click', this._onClearButtonClicked, this);
     this._panelToolbar.appendToolbarItem(this._clearButton);
     this._panelToolbar.appendSeparator();
     var recordFilmStripButton = new UI.ToolbarSettingToggle(
         this._networkRecordFilmStripSetting, 'largeicon-camera', Common.UIString('Capture screenshots'));
     this._panelToolbar.appendToolbarItem(recordFilmStripButton);
 
     this._panelToolbar.appendToolbarItem(this._filterBar.filterButton());
     this._panelToolbar.appendSeparator();
 
     this._panelToolbar.appendText(Common.UIString('View:'));
@@ skipping 570 matching lines @@
    * @param {string} actionId
    * @return {boolean}
    */
   handleAction(context, actionId) {
     var panel = UI.context.flavor(Network.NetworkPanel);
     console.assert(panel && panel instanceof Network.NetworkPanel);
     panel._toggleRecording();
     return true;
   }
 };