DevTools: Remember the last focused widget.

third_party/WebKit/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 238 matching lines @@
             this._treeOutlines[i].setVisibleWidth(width);
         }
         this._breadcrumbs.updateSizes();
     },
 
     /**
      * @override
      */
     focus: function()
     {
-        if (this._treeOutlines.length)
+        if (this._treeOutlines.length) {
             this._treeOutlines[0].focus();
+            this.wasFocused();
+        }
     },
 
     /**
      * @override
      * @return {!WebInspector.SearchableView}
      */
     searchableView: function()
     {
         return this._searchableView;
     },
@@ skipping 844 matching lines @@
     /**
      * @override
      * @param {!WebInspector.DOMNode} node
      * @return {?{title: string, color: string}}
      */
     decorate: function(node)
     {
         return { color: "orange", title: WebInspector.UIString("Element state: %s", ":" + WebInspector.CSSModel.fromNode(node).pseudoState(node).join(", :")) };
     }
 }