convert //mash to std::unique_ptr

mash/example/window_type_launcher/main.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 <utility>
 
 #include "base/at_exit.h"
 #include "base/command_line.h"
 #include "base/debug/stack_trace.h"
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop.h"
 #include "base/process/launch.h"
 #include "base/threading/thread.h"
 #include "build/build_config.h"
 #include "mash/example/window_type_launcher/window_type_launcher.h"
 #include "mojo/edk/embedder/embedder.h"
 #include "mojo/edk/embedder/process_delegate.h"
 #include "mojo/shell/public/cpp/shell_connection.h"
 #include "mojo/shell/public/interfaces/shell_client.mojom.h"
 #include "mojo/shell/runner/common/client_util.h"
@@ skipping 43 matching lines @@
     WindowTypeLauncher delegate;
     mojo::ShellConnection impl(
         &delegate, mojo::shell::GetShellClientRequestFromCommandLine());
     loop.Run();
 
     mojo::edk::ShutdownIPCSupport();
   }
 
   return 0;
 }