7/ Eliminate on_application_end from ConnectParams

mojo/shell/standalone/desktop/main_helper.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef MOJO_SHELL_STANDALONE_DESKTOP_MAIN_HELPER_H
 #define MOJO_SHELL_STANDALONE_DESKTOP_MAIN_HELPER_H
 
 #include "base/callback.h"
 #include "url/gurl.h"
 
 namespace mojo {
 namespace shell {
 
 // Helper method to start Mojo standalone shell code.
-// If |mojo_url| is not empty, the given mojo application is started. Otherwise,
-// an application must have been specified on the command line and it is run.
-// |callback| is only called in the later case.
-int StandaloneShellMain(int argc,
-                        char** argv,
-                        const GURL& mojo_url,
-                        const base::Closure& callback);
+int StandaloneShellMain(int argc, char** argv);
 
 }  // namespace shell
 }  // namespace mojo
 
 #endif  // MOJO_SHELL_STANDALONE_DESKTOP_MAIN_HELPER_H