[DevTools] Make profiles sidebar section non-collapsible.

third_party/WebKit/Source/devtools/front_end/profiler/ProfilesPanel.js

 /*
  * Copyright (C) 2008 Apple Inc. All Rights Reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 435 matching lines @@
   constructor(dataDisplayDelegate, profileType) {
     super(profileType.treeItemTitle.escapeHTML(), true);
     this.selectable = false;
     this._dataDisplayDelegate = dataDisplayDelegate;
     /** @type {!Array<!Profiler.ProfileSidebarTreeElement>} */
     this._profileTreeElements = [];
     /** @type {!Object<string, !Profiler.ProfileTypeSidebarSection.ProfileGroup>} */
     this._profileGroups = {};
     this.expand();
     this.hidden = true;
+    this.setCollapsible(false);
   }
 
   /**
    * @param {!Profiler.ProfileHeader} profile
    */
   addProfileHeader(profile) {
     this.hidden = false;
     var profileType = profile.profileType();
     var sidebarParent = this;
     var profileTreeElement = profile.createSidebarTreeElement(this._dataDisplayDelegate);
@@ skipping 348 matching lines @@
    * @param {string} actionId
    * @return {boolean}
    */
   handleAction(context, actionId) {
     var panel = UI.context.flavor(Profiler.JSProfilerPanel);
     console.assert(panel && panel instanceof Profiler.JSProfilerPanel);
     panel.toggleRecord();
     return true;
   }
 };