Start sending auxclick instead of click for non-primary buttons

third_party/WebKit/Source/devtools/front_end/ui/TabbedPane.js

 /*
  * Copyright (C) 2010 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 1035 matching lines @@
         if (!measuring)
             this._titleElement = titleElement;
 
         if (this._closeable)
             tabElement.createChild("div", "tabbed-pane-close-button", "dt-close-button").gray = true;
 
         if (measuring) {
             tabElement.classList.add("measuring");
         } else {
             tabElement.addEventListener("click", this._tabClicked.bind(this), false);
+            tabElement.addEventListener("auxclick", this._tabClicked.bind(this), false);
             tabElement.addEventListener("mousedown", this._tabMouseDown.bind(this), false);
             tabElement.addEventListener("mouseup", this._tabMouseUp.bind(this), false);
 
             tabElement.addEventListener("contextmenu", this._tabContextMenu.bind(this), false);
             if (this._tabbedPane._allowTabReorder)
                 WebInspector.installDragHandle(tabElement, this._startTabDragging.bind(this), this._tabDragging.bind(this), this._endTabDragging.bind(this), "-webkit-grabbing", "pointer", 200);
         }
 
         return tabElement;
     },
@@ skipping 172 matching lines @@
      * @param {!Array.<string>} ids
      */
     closeTabs: function(tabbedPane, ids) { },
 
     /**
      * @param {string} tabId
      * @param {!WebInspector.ContextMenu} contextMenu
      */
     onContextMenu: function(tabId, contextMenu) { }
 }