DevTools: make toolbar button click targets square

Source/devtools/front_end/elements/ElementsPanel.js

 /*
  * Copyright (C) 2007, 2008 Apple Inc.  All rights reserved.
  * Copyright (C) 2008 Matt Lilek <webkit@mattlilek.com>
  * Copyright (C) 2009 Joseph Pecoraro
  *
  * 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
@@ skipping 102 matching lines @@
 WebInspector.ElementsPanel._elementsSidebarViewTitleSymbol = Symbol("title");
 
 WebInspector.ElementsPanel.prototype = {
     /**
      * @return {!WebInspector.Toolbar}
      */
     _createElementsToolbar: function()
     {
         var toolbar = new WebInspector.ExtensibleToolbar("elements-toolbar");
         toolbar.element.classList.add("elements-toolbar");
-        toolbar.appendToolbarItem(new WebInspector.ToolbarSeparator());
+        toolbar.appendSeparator();
         return toolbar;
     },
 
     _loadSidebarViews: function()
     {
         var extensions = self.runtime.extensions("@WebInspector.Widget");
 
         for (var i = 0; i < extensions.length; ++i) {
             var descriptor = extensions[i].descriptor();
             if (descriptor["location"] !== "elements-panel")
@@ skipping 985 matching lines @@
 WebInspector.ElementsPanelFactory.prototype = {
     /**
      * @override
      * @return {!WebInspector.Panel}
      */
     createPanel: function()
     {
         return WebInspector.ElementsPanel.instance();
     }
 }