DevTools: migrate treeoutline from hasChildren to is/setExpandable().

Source/devtools/front_end/ui/SidebarTreeElement.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
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 /**
  * @constructor
  * @extends {TreeElement}
+ * @param {string} title
  */
-WebInspector.SidebarSectionTreeElement = function(title, hasChildren)
+WebInspector.SidebarSectionTreeElement = function(title)
 {
-    TreeElement.call(this, title.escapeHTML(), hasChildren);
+    TreeElement.call(this, title.escapeHTML(), true);
     this.expand();
 }
 
 WebInspector.SidebarSectionTreeElement.prototype = {
     selectable: false,
 
     collapse: function()
     {
         // Should not collapse as it is not selectable.
     },
@@ skipping 26 matching lines @@
 
     __proto__: TreeElement.prototype
 }
 
 /**
  * @constructor
  * @extends {TreeElement}
  * @param {string} className
  * @param {string} title
  * @param {string=} subtitle
- * @param {boolean=} hasChildren
+ * @param {boolean=} expandable
  */
-WebInspector.SidebarTreeElement = function(className, title, subtitle, hasChildren)
+WebInspector.SidebarTreeElement = function(className, title, subtitle, expandable)
 {
-    TreeElement.call(this, "", hasChildren);
+    TreeElement.call(this, "", expandable);
 
-    if (hasChildren)
+    if (expandable)
         this.disclosureButton = createElementWithClass("button", "disclosure-button");
 
     this.iconElement = createElementWithClass("div", "icon");
     this.statusElement = createElementWithClass("div", "status");
     this.titlesElement = createElementWithClass("div", "titles");
 
     this.titleContainer = this.titlesElement.createChild("span", "title-container");
     this.titleElement = this.titleContainer.createChild("span", "title");
 
     this.subtitleElement = this.titlesElement.createChild("span", "subtitle");
@@ skipping 72 matching lines @@
     onattach: function()
     {
         this.listItemElement.classList.add("sidebar-tree-item");
 
         if (this.className)
             this.listItemElement.classList.add(this.className);
 
         if (this.small)
             this.listItemElement.classList.add("small");
 
-        if (this.hasChildren && this.disclosureButton)
+        if (this.isExpandable() && this.disclosureButton)
             this.listItemElement.appendChild(this.disclosureButton);
 
         this.listItemElement.appendChildren(this.iconElement, this.statusElement, this.titlesElement);
     },
 
     onreveal: function()
     {
         if (this.listItemElement)
             this.listItemElement.scrollIntoViewIfNeeded(false);
     },
 
     __proto__: TreeElement.prototype
 }