/**
  * Implementation of certificate handler for EventHandler. Called every time a resource is loaded
  * via a secure connection. In this context, can be called multiple times if we have redirects
  *
  * @param certificate The SSL certifcate
  */
 public void certificate(SslCertificate certificate) {
   // if this is the top-most main-frame page loader
   if (mIsMainPageLoader) {
     // update the browser frame (ie, the main frame)
     mBrowserFrame.certificate(certificate);
   }
 }