[DevTools] Separate old Application tab code

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

 // Copyright 2017 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.
 
 Resources.ResourcesSection = class {
   /**
    * @param {!Resources.ResourcesPanel} storagePanel
    * @param {!UI.TreeElement} treeElement
    */
   constructor(storagePanel, treeElement) {
@@ skipping 100 matching lines @@
    */
   _populateFrame(frame) {
     this._frameAdded(frame);
     for (var child of frame.childFrames)
       this._populateFrame(child);
     for (var resource of frame.resources())
       this._resourceAdded(resource);
   }
 };
 
-Resources.FrameTreeElement = class extends Resources.BaseStorageTreeElement {
+Resources.FrameTreeElement = class extends Resources.SidebarTreeElement {
   /**
    * @param {!Resources.ResourcesPanel} storagePanel
    * @param {!SDK.ResourceTreeFrame} frame
    */
   constructor(storagePanel, frame) {
     super(storagePanel, '', false);
     this._panel = storagePanel;
     this._frame = frame;
     this._frameId = frame.id;
     this._categoryElements = {};
@@ skipping 103 matching lines @@
     var childCount = parentTreeElement.childCount();
     var i;
     for (i = 0; i < childCount; ++i) {
       if (compare(childTreeElement, parentTreeElement.childAt(i)) < 0)
         break;
     }
     parentTreeElement.insertChild(childTreeElement, i);
   }
 };
 
-Resources.FrameResourceTreeElement = class extends Resources.BaseStorageTreeElement {
+Resources.FrameResourceTreeElement = class extends Resources.SidebarTreeElement {
   /**
    * @param {!Resources.ResourcesPanel} storagePanel
    * @param {!SDK.Resource} resource
    */
   constructor(storagePanel, resource) {
     super(storagePanel, resource.displayName, false);
     this._panel = storagePanel;
     /** @type {!SDK.Resource} */
     this._resource = resource;
     /** @type {?SourceFrame.ResourceSourceFrame} */
@@ skipping 91 matching lines @@
   _sourceView() {
     if (!this._sourceFrame) {
       this._sourceFrame = new SourceFrame.ResourceSourceFrame(this._resource);
       this._sourceFrame.setHighlighterType(this._resource.canonicalMimeType());
     }
     return this._sourceFrame;
   }
 };
 
 Resources.FrameResourceTreeElement._symbol = Symbol('treeElement');