Factor stuff from ApplicationImpl out to a new class, ApplicationImplBase.

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 <memory>
 
 #include "examples/bank_app/bank.mojom.h"
 #include "mojo/public/c/system/main.h"
+#include "mojo/public/cpp/application/application_delegate.h"
 #include "mojo/public/cpp/application/application_impl.h"
 #include "mojo/public/cpp/application/application_runner.h"
 #include "mojo/public/cpp/application/connect.h"
 #include "mojo/public/cpp/utility/run_loop.h"
 #include "mojo/services/vanadium/security/interfaces/principal.mojom.h"
 
 namespace examples {
 
 class LoginHandler {
  public:
@@ skipping 34 matching lines @@
   vanadium::PrincipalServicePtr login_service_;
 };
 
 }  // namespace examples
 
 MojoResult MojoMain(MojoHandle application_request) {
   mojo::ApplicationRunner runner(
       std::unique_ptr<examples::BankCustomer>(new examples::BankCustomer()));
   return runner.Run(application_request);
 }