Get rid of {Run,Terminate}MainApplication(), and more ApplicationDelegate conversion.

examples/bank_app/customer.cc

 // 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.
 
 #include "examples/bank_app/bank.mojom.h"
 #include "mojo/public/c/system/main.h"
 #include "mojo/public/cpp/application/application_impl_base.h"
 #include "mojo/public/cpp/application/connect.h"
 #include "mojo/public/cpp/application/run_application.h"
 #include "mojo/public/cpp/utility/run_loop.h"
@@ skipping 36 matching lines @@
   void OnQuit() override { login_service_->Logout(); }
 
  private:
   vanadium::PrincipalServicePtr login_service_;
 };
 
 }  // namespace examples
 
 MojoResult MojoMain(MojoHandle application_request) {
   examples::BankCustomer bank_customer;
-  return mojo::RunMainApplication(application_request, &bank_customer);
+  return mojo::RunApplication(application_request, &bank_customer);
 }