Paint a focus indication on LinkButtonGtk buttons....

chrome/browser/gtk/link_button_gtk.h

 // Copyright (c) 2009 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <gdk/gdk.h>
 #include <gtk/gtk.h>
 
 #include "chrome/common/owned_widget_gtk.h"
 
 // Creates a link button that shows |text| in blue and underlined. The cursor
 // changes to a hand when over the link.
-// TODO(estade): the link should turn red during the user's click.
 class LinkButtonGtk {
  public:
   explicit LinkButtonGtk(const char* text);
   virtual ~LinkButtonGtk();
 
   GtkWidget* widget() { return widget_.get(); }
 
   GtkWidget* label() { return label_; }
 
  private:
@@ skipping 21 matching lines @@
   // user mouses over the link.
   GdkCursor* hand_cursor_;
 
   // Text markup for the link. We use the red one when the link is being
   // clicked.
   gchar* blue_markup;
   gchar* red_markup;
   // The current state of the text.
   bool is_blue_;
 };