Implement icon attribute for menuitem

Source/platform/ContextMenuItem.h

 /*
  * Copyright (C) 2006 Apple Computer, Inc.  All rights reserved.
  * Copyright (C) 2010 Igalia S.L
  *
  * 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
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 33 matching lines @@
 enum ContextMenuItemType {
     ActionType,
     CheckableActionType,
     SeparatorType,
     SubmenuType
 };
 
 class PLATFORM_EXPORT ContextMenuItem {
     WTF_MAKE_FAST_ALLOCATED;
 public:
-    ContextMenuItem(ContextMenuItemType, ContextMenuAction, const String&, ContextMenu* subMenu = 0);
-    ContextMenuItem(ContextMenuItemType, ContextMenuAction, const String&, bool enabled, bool checked);
+    ContextMenuItem(ContextMenuItemType, ContextMenuAction, const String& title, const String& icon, ContextMenu* subMenu = 0);
+    ContextMenuItem(ContextMenuItemType, ContextMenuAction, const String& title, const String& icon, bool enabled, bool checked);
 
     ~ContextMenuItem();
 
     void setType(ContextMenuItemType);
     ContextMenuItemType type() const;
 
     void setAction(ContextMenuAction);
     ContextMenuAction action() const;
 
     void setChecked(bool = true);
     bool checked() const;
 
     void setEnabled(bool = true);
     bool enabled() const;
 
     void setSubMenu(ContextMenu*);
 
     ContextMenuItem(ContextMenuAction, const String&, bool enabled, bool checked, const Vector<ContextMenuItem>& subMenuItems);
 
     void setTitle(const String& title) { m_title = title; }
     const String& title() const { return m_title; }
 
+    void setIcon(const String& icon) { m_icon = icon; }
+    const String& icon() const { return m_icon; }
+
     const Vector<ContextMenuItem>& subMenuItems() const { return m_subMenuItems; }
 
 private:
     ContextMenuItemType m_type;
     ContextMenuAction m_action;
     String m_title;
+    String m_icon;
     bool m_enabled;
     bool m_checked;
     Vector<ContextMenuItem> m_subMenuItems;
 };
 
 }
 
 #endif // ContextMenuItem_h