Add the ability to restrict V8 extension loading by frame using a new CefPermissionHandler::OnBeforeScriptExtensionLoad() callback (issue #471).

git-svn-id: https://chromiumembedded.googlecode.com/svn/trunk@457 5089003a-bbd8-11dd-ad1f-f1f9622dbc98

tests/cefclient/client_handler.cpp

@@ -303,6 +303,13 @@ bool ClientHandler::OnDragEnter(CefRefPtr<CefBrowser> browser,
   return false;
 }
 
+bool ClientHandler::OnBeforeScriptExtensionLoad(CefRefPtr<CefBrowser> browser,
+                                                CefRefPtr<CefFrame> frame,
+                                                const CefString& extensionName)
+{
+  return false;
+}
+
 void ClientHandler::NotifyDownloadComplete(const CefString& fileName)
 {
   SetLastDownloadFile(fileName);