DevTools: introduce View: a named widget with the toolbar.

third_party/WebKit/Source/devtools/front_end/elements/ElementsSidebarView.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.
-
-/**
- * @constructor
- * @extends {WebInspector.SidebarPane}
- * @param {string} title
- * @param {!WebInspector.Widget} widget
- */
-WebInspector.ElementsSidebarViewWrapperPane = function(title, widget)
-{
-    WebInspector.SidebarPane.call(this, title);
-    widget.show(this.element);
-}
-
-WebInspector.ElementsSidebarViewWrapperPane.prototype = {
-    __proto__: WebInspector.SidebarPane.prototype
-}