First pass as implementing the greasemonkey API. This patch

webkit/glue/webframe_impl.h

 /*
  * Copyright (C) 2006 Apple Computer, 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:
  * 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 78 matching lines @@
   virtual void LoadAlternateHTMLString(const WebRequest* request,
                                        const std::string& html_text,
                                        const GURL& display_url,
                                        bool replace);
   virtual void LoadAlternateHTMLErrorPage(const WebRequest* request,
                                           const WebError& error,
                                           const GURL& error_page_url,
                                           bool replace,
                                           const GURL& fake_url);
   virtual void ExecuteJavaScript(const std::string& js_code,
-                                 const GURL& script_url);
+                                 const GURL& script_url,
+                                 int start_line);
   virtual bool GetPreviousHistoryState(std::string* history_state) const;
   virtual bool GetCurrentHistoryState(std::string* history_state) const;
   virtual bool HasCurrentHistoryState() const;
   virtual GURL GetURL() const;
   virtual GURL GetFavIconURL() const;
   virtual GURL GetOSDDURL() const;
   virtual WebDataSource* GetDataSource() const;
   virtual WebDataSource* GetProvisionalDataSource() const;
   virtual void StopLoading();
   virtual WebFrame* GetOpener() const;
@@ skipping 321 matching lines @@
   // The input fields that are interested in edit events and their associated
   // listeners.
   typedef HashMap<RefPtr<WebCore::HTMLInputElement>,
       webkit_glue::PasswordAutocompleteListener*> PasswordListenerMap;
   PasswordListenerMap password_listeners_;
 
   DISALLOW_COPY_AND_ASSIGN(WebFrameImpl);
 };
 
 #endif  // WEBKIT_GLUE_WEBFRAME_IMPL_H_