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

third_party/WebKit/Source/devtools/front_end/resources/ServiceWorkersView.js

 // Copyright (c) 2015 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.
 /**
  * @implements {SDK.TargetManager.Observer}
  * @unrestricted
  */
 Resources.ServiceWorkersView = class extends UI.VBox {
   constructor() {
     super(true);
@@ skipping 136 matching lines @@
    */
   constructor(manager, subTargetsManager, section, registration) {
     this._manager = manager;
     this._subTargetsManager = subTargetsManager;
     this._section = section;
     this._registration = registration;
 
     this._toolbar = section.createToolbar();
     this._toolbar.renderAsLinks();
     this._updateButton = new UI.ToolbarButton(Common.UIString('Update'), undefined, Common.UIString('Update'));
-    this._updateButton.addEventListener(UI.ToolbarButton.Events.Click, this._updateButtonClicked, this);
+    this._updateButton.addEventListener('click', this._updateButtonClicked.bind(this));
     this._toolbar.appendToolbarItem(this._updateButton);
     this._pushButton = new UI.ToolbarButton(Common.UIString('Emulate push event'), undefined, Common.UIString('Push'));
-    this._pushButton.addEventListener(UI.ToolbarButton.Events.Click, this._pushButtonClicked, this);
+    this._pushButton.addEventListener('click', this._pushButtonClicked.bind(this));
     this._toolbar.appendToolbarItem(this._pushButton);
     this._syncButton =
         new UI.ToolbarButton(Common.UIString('Emulate background sync event'), undefined, Common.UIString('Sync'));
-    this._syncButton.addEventListener(UI.ToolbarButton.Events.Click, this._syncButtonClicked, this);
+    this._syncButton.addEventListener('click', this._syncButtonClicked.bind(this));
     this._toolbar.appendToolbarItem(this._syncButton);
     this._deleteButton =
         new UI.ToolbarButton(Common.UIString('Unregister service worker'), undefined, Common.UIString('Unregister'));
-    this._deleteButton.addEventListener(UI.ToolbarButton.Events.Click, this._unregisterButtonClicked, this);
+    this._deleteButton.addEventListener('click', this._unregisterButtonClicked.bind(this));
     this._toolbar.appendToolbarItem(this._deleteButton);
 
     // Preserve the order.
     this._section.appendField(Common.UIString('Source'));
     this._section.appendField(Common.UIString('Status'));
     this._section.appendField(Common.UIString('Clients'));
     this._section.appendField(Common.UIString('Errors'));
     this._errorsList = this._wrapWidget(this._section.appendRow());
     this._errorsList.classList.add('service-worker-error-stack', 'monospace', 'hidden');
 
@@ skipping 132 matching lines @@
    */
   _addError(error) {
     var target = this._targetForVersionId(error.versionId);
     var message = this._errorsList.createChild('div');
     if (this._errorsList.childElementCount > 100)
       this._errorsList.firstElementChild.remove();
     message.appendChild(this._linkifier.linkifyScriptLocation(target, null, error.sourceURL, error.lineNumber));
     message.appendChild(createLabel('#' + error.versionId + ': ' + error.errorMessage, 'smallicon-error'));
   }
 
-  /**
-   * @param {!Common.Event} event
-   */
-  _unregisterButtonClicked(event) {
+  _unregisterButtonClicked() {
     this._manager.deleteRegistration(this._registration.id);
   }
 
-  /**
-   * @param {!Common.Event} event
-   */
-  _updateButtonClicked(event) {
+  _updateButtonClicked() {
     this._manager.updateRegistration(this._registration.id);
   }
 
-  /**
-   * @param {!Common.Event} event
-   */
-  _pushButtonClicked(event) {
+  _pushButtonClicked() {
     var data = 'Test push message from DevTools.';
     this._manager.deliverPushMessage(this._registration.id, data);
   }
 
-  /**
-   * @param {!Common.Event} event
-   */
-  _syncButtonClicked(event) {
+  _syncButtonClicked() {
     var tag = 'test-tag-from-devtools';
     var lastChance = true;
     this._manager.dispatchSyncEvent(this._registration.id, tag, lastChance);
   }
 
   /**
    * @param {!Element} element
    * @param {?SDK.TargetInfo} targetInfo
    */
   _onClientInfo(element, targetInfo) {
@@ skipping 73 matching lines @@
     shadowRoot.appendChild(contentElement);
     return contentElement;
   }
 
   _dispose() {
     this._linkifier.dispose();
     if (this._pendingUpdate)
       clearTimeout(this._pendingUpdate);
   }
 };