For lack of a better approach we now initiate the plugin src url download in ...

webkit/glue/webplugin_impl.h

Index: webkit/glue/webplugin_impl.h
===================================================================
--- webkit/glue/webplugin_impl.h	(revision 17977)
+++ webkit/glue/webplugin_impl.h	(working copy)
@@ -320,6 +320,9 @@
   static void ArrayToVector(int total_values, char** values,
                             std::vector<std::string>* value_vector);
 
+  // Delayed task for downloading the plugin source URL.
+  void OnDownloadPluginSrcUrl();
+
   struct ClientInfo {
     int id;
     WebPluginResourceClient* client;
@@ -363,6 +366,8 @@
   // Holds the list of argument values passed to the plugin.
   std::vector<std::string> arg_values_;
 
+  ScopedRunnableMethodFactory<WebPluginImpl> method_factory_;
+
   DISALLOW_COPY_AND_ASSIGN(WebPluginImpl);
 };