DevTools: ViewContainer shouldn't be a tab stop

third_party/WebKit/Source/devtools/front_end/ui/View.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.
 /**
  * @interface
  */
 UI.View = function() {};
 
 UI.View.prototype = {
   /**
@@ skipping 402 matching lines @@
  * @unrestricted
  */
 UI.ViewManager._ContainerWidget = class extends UI.VBox {
   /**
    * @param {!UI.View} view
    */
   constructor(view) {
     super();
     this.element.classList.add('flex-auto', 'view-container', 'overflow-auto');
     this._view = view;
-    this.element.tabIndex = 0;
+    this.element.tabIndex = -1;
     this.setDefaultFocusedElement(this.element);
   }
 
   /**
    * @return {!Promise}
    */
   _materialize() {
     if (this._materializePromise)
       return this._materializePromise;
     var promises = [];
@@ skipping 430 matching lines @@
   appendApplicableItems(locationName) {
     for (var view of this._manager._viewsForLocation(locationName))
       this.appendView(view);
   }
 };
 
 /**
  * @type {!UI.ViewManager}
  */
 UI.viewManager;