Make PlatformFileForTransit a class on Windows.

content/child/mojo/mojo_application.cc

 // 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.
 
 #include "content/child/mojo/mojo_application.h"
 
 #include <utility>
 
 #include "build/build_config.h"
 #include "content/child/child_process.h"
@@ skipping 21 matching lines @@
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
 }
 
 void MojoApplication::OnActivate(
     const IPC::PlatformFileForTransit& file) {
 #if defined(OS_POSIX)
   base::PlatformFile handle = file.fd;
 #elif defined(OS_WIN)
-  base::PlatformFile handle = file;
+  base::PlatformFile handle = file.GetHandle();
 #endif
 
   mojo::ScopedMessagePipeHandle pipe =
       channel_init_.Init(handle, io_task_runner_);
   DCHECK(pipe.is_valid());
 
   mojom::ApplicationSetupPtr application_setup;
   application_setup.Bind(
       mojo::InterfacePtrInfo<mojom::ApplicationSetup>(std::move(pipe), 0u));
 
   mojo::shell::mojom::InterfaceProviderPtr services;
   mojo::shell::mojom::InterfaceProviderPtr exposed_services;
   service_registry_.Bind(GetProxy(&exposed_services));
   application_setup->ExchangeInterfaceProviders(GetProxy(&services),
                                                 std::move(exposed_services));
   service_registry_.BindRemoteServiceProvider(std::move(services));
 }
 
 }  // namespace content