Add a test for application lifecycle

mojo/shell/public/cpp/application_runner.h

 // Copyright 2014 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_PUBLIC_CPP_APPLICATION_RUNNER_H_
 #define MOJO_SHELL_PUBLIC_CPP_APPLICATION_RUNNER_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop.h"
 #include "mojo/public/cpp/system/core.h"
 
 namespace mojo {
 
 class ShellClient;
+class ShellConnection;
 
 // A utility for running a chromium based mojo Application. The typical use
 // case is to use when writing your MojoMain:
 //
 //  MojoResult MojoMain(MojoHandle shell_handle) {
 //    mojo::ApplicationRunner runner(new MyDelegate());
 //    return runner.Run(shell_handle);
 //  }
 //
 // ApplicationRunner takes care of chromium environment initialization and
@@ skipping 14 matching lines @@
   // the application exits.
   //
   // Iff |init_base| is true, the runner will perform some initialization of
   // base globals (e.g. CommandLine and AtExitManager) before starting the
   // application.
   MojoResult Run(MojoHandle shell_handle, bool init_base);
 
   // Calls Run above with |init_base| set to |true|.
   MojoResult Run(MojoHandle shell_handle);
 
+  // Allows the caller to shut down the connection with the shell. After the
+  // shell notices the pipe has closed, it will no longer track an instance of
+  // this application, though this application may continue to run and service
+  // requests from others.
+  void DestroyShellConnection();
+
  private:
+  scoped_ptr<ShellConnection> connection_;
   scoped_ptr<ShellClient> client_;
 
   // MessageLoop type. TYPE_CUSTOM is default (MessagePumpMojo will be used as
   // the underlying message pump).
   base::MessageLoop::Type message_loop_type_;
   // Whether Run() has been called.
   bool has_run_;
 
   DISALLOW_COPY_AND_ASSIGN(ApplicationRunner);
 };
 
 }  // namespace mojo
 
 #endif  // MOJO_SHELL_PUBLIC_CPP_APPLICATION_RUNNER_H_