Initial Greasemonkey support

webkit/glue/webframe.h

Index: webkit/glue/webframe.h
===================================================================
--- webkit/glue/webframe.h	(revision 3492)
+++ webkit/glue/webframe.h	(working copy)
@@ -91,6 +91,12 @@
                                           bool replace,
                                           const GURL& fake_url) = 0;
 
+  // Executes a string of JavaScript in the web frame. The script_url param is
+  // the URL where the script in question can be found, if any. The renderer may
+  // request this URL to show the developer the source of the error.
+  virtual void ExecuteJavaScript(const std::string& js_code,
+                                 const std::string& script_url) = 0;
+
   // Returns a string representing the state of the previous page load for
   // later use when loading as well as the uri and title of the page.  The
   // previous page is the page that was loaded before DidCommitLoadForFrame was