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

third_party/WebKit/Source/devtools/front_end/emulation/DeviceModeToolbar.js

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 /**
  * @unrestricted
  */
 Emulation.DeviceModeToolbar = class {
   /**
    * @param {!Emulation.DeviceModeModel} model
    * @param {!Common.Setting} showMediaInspectorSetting
@@ skipping 152 matching lines @@
     toolbar.appendToolbarItem(this._uaItem);
   }
 
   /**
    * @param {!UI.Toolbar} toolbar
    */
   _fillModeToolbar(toolbar) {
     toolbar.appendToolbarItem(
         this._wrapToolbarItem(createElementWithClass('div', 'device-mode-empty-toolbar-element')));
     this._modeButton = new UI.ToolbarButton('', 'largeicon-rotate-screen');
-    this._modeButton.addEventListener(UI.ToolbarButton.Events.Click, this._modeMenuClicked, this);
+    this._modeButton.addEventListener('click', this._modeMenuClicked, this);
     toolbar.appendToolbarItem(this._modeButton);
   }
 
   /**
    * @param {!UI.Toolbar} toolbar
    */
   _fillOptionsToolbar(toolbar) {
     this._networkConditionsItem = Components.NetworkConditionsSelector.createToolbarMenuButton();
     this._networkConditionsItem.setVisible(this._showNetworkConditionsSetting.get());
     this._networkConditionsItem.setTitle(Common.UIString('Network throttling'));
@@ skipping 397 matching lines @@
             this._emulateDevice(device);
             return;
           }
         }
       }
     }
 
     this._model.emulate(Emulation.DeviceModeModel.Type.Responsive, null, null);
   }
 };