DevTools: migrate sidebar pane's titleElement to use Toolbar.

Source/devtools/front_end/ui/Toolbar.js

 /*
  * Copyright (C) 2009 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 19 matching lines @@
 
 /**
  * @constructor
  * @param {!Element=} parentElement
  */
 WebInspector.Toolbar = function(parentElement)
 {
     /** @type {!Array.<!WebInspector.ToolbarItem>} */
     this._items = [];
     this.element = parentElement ? parentElement.createChild("div", "toolbar") : createElementWithClass("div", "toolbar");
-
     this._shadowRoot = WebInspector.createShadowRootWithCoreStyles(this.element);
     this._shadowRoot.appendChild(WebInspector.Widget.createStyleElement("ui/toolbar.css"));
     this._contentElement = this._shadowRoot.createChild("div", "toolbar-shadow");
     this._contentElement.createChild("content");
 }
 
 WebInspector.Toolbar.prototype = {
     makeNarrow: function()
     {
         this._contentElement.classList.add("narrow");
@@ skipping 480 matching lines @@
         function mouseUp(e)
         {
             if (e.which !== 1)
                 return;
             optionsGlassPane.dispose();
             document.documentElement.removeEventListener("mouseup", mouseUp, false);
 
             for (var i = 0; i < buttons.length; ++i) {
                 if (buttons[i].element.classList.contains("emulate-active")) {
                     buttons[i].element.classList.remove("emulate-active");
-                    buttons[i]._clicked();
+                    buttons[i]._clicked(e);
                     break;
                 }
             }
         }
     },
 
     __proto__: WebInspector.ToolbarItem.prototype
 }
 
 /**
@@ skipping 439 matching lines @@
             for (var i = 0; i < items.length; ++i) {
                 var item = items[i];
                 if (item)
                     this.appendToolbarItem(item);
             }
         }
     },
 
     __proto__: WebInspector.Toolbar.prototype
 }