DevTools: do not hide run audit dialog upon canceling the audit, allow it being re-run.

third_party/WebKit/Source/devtools/front_end/audits2/Audits2Panel.js

 // Copyright (c) 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
  */
 Audits2.Audits2Panel = class extends UI.PanelWithSidebar {
   constructor() {
     super('audits2');
@@ skipping 59 matching lines @@
         ' help you identify and fix common problems that affect' +
         ' your site\'s performance, accessibility, and user experience. ');
     var link = text.createChild('span', 'link');
     link.textContent = Common.UIString('Learn more');
     link.addEventListener(
         'click', () => InspectorFrontendHost.openInNewTab('https://developers.google.com/web/tools/lighthouse/'));
 
     var newButton = UI.createTextButton(
         Common.UIString('Perform an audit\u2026'), this._showLauncherUI.bind(this), 'material-button default');
     landingCenter.appendChild(newButton);
+    this.setDefaultFocusedElement(newButton);
   }
 
   _showLauncherUI() {
     this._dialog = new UI.Dialog();
     this._dialog.setOutsideClickCallback(event => event.consume(true));
     var root = UI.createShadowRootWithCoreStyles(this._dialog.contentElement, 'audits2/audits2Dialog.css');
     var auditsViewElement = root.createChild('div', 'audits2-view');
     var uiElement = auditsViewElement.createChild('div');
     var headerElement = uiElement.createChild('header');
     this._headerTitleElement = headerElement.createChild('p');
@@ skipping 137 matching lines @@
    */
   _updateStatus(statusMessage) {
     if (!this._dialog)
       return;
     this._statusElement.textContent = statusMessage;
   }
 
   /**
    * @return {!Promise<undefined>}
    */
-  _stopAndReattach() {
-    return this._protocolService.detach().then(_ => {
-      Emulation.InspectedPagePlaceholder.instance().update(true);
-      this._auditRunning = false;
-      this._updateButton();
-      var resourceTreeModel = SDK.targetManager.mainTarget().model(SDK.ResourceTreeModel);
-      // reload to reset the page state
-      resourceTreeModel.navigate(this._inspectedURL).then(() => this._hideDialog());
-    });
+  async _stopAndReattach() {
+    await this._protocolService.detach();
+    Emulation.InspectedPagePlaceholder.instance().update(true);
+    var resourceTreeModel = SDK.targetManager.mainTarget().model(SDK.ResourceTreeModel);
+    // reload to reset the page state
+    await resourceTreeModel.navigate(this._inspectedURL);
+    this._auditRunning = false;
+    this._updateButton();
   }
 
   /**
    * @param {!ReportRenderer.ReportJSON} lighthouseResult
    */
   _buildReportUI(lighthouseResult) {
     if (lighthouseResult === null) {
       this._updateStatus(Common.UIString('Auditing failed.'));
       return;
     }
@@ skipping 463 matching lines @@
           return;
 
         var element = Components.DOMPresentationUtils.linkifyNodeReference(node, undefined, detailsItem.snippet);
         origElement.title = '';
         origElement.textContent = '';
         origElement.appendChild(element);
       });
     });
   }
 };