Mojo: Use InterfaceFactory<Interface> for service registration

mojo/services/network/main.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 "base/at_exit.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/message_loop/message_loop.h"
 #include "mojo/public/cpp/application/application_connection.h"
 #include "mojo/public/cpp/application/application_delegate.h"
 #include "mojo/public/cpp/application/application_impl.h"
+#include "mojo/public/cpp/application/context_interface_provider.h"
 #include "mojo/public/cpp/bindings/interface_ptr.h"
 #include "mojo/public/interfaces/service_provider/service_provider.mojom.h"
 #include "mojo/services/network/network_context.h"
 #include "mojo/services/network/network_service_impl.h"
 #include "mojo/services/public/interfaces/profile/profile_service.mojom.h"
 
 namespace {
 
 void OnPathReceived(base::FilePath* path, const mojo::String& path_as_string) {
   DCHECK(!path_as_string.is_null());
 #if defined(OS_POSIX)
   *path = base::FilePath(path_as_string);
 #elif defined(OS_WIN)
   *path = base::FilePath::FromUTF8Unsafe(path_as_string);
 #else
 #error Not implemented
 #endif
 }
 
 }  // namespace
 
 class Delegate : public mojo::ApplicationDelegate {
+  typedef mojo::ContextInterfaceProvider<mojo::NetworkServiceImpl,
+                                         mojo::NetworkContext> NetworkProvider;
+
  public:
   Delegate() {}
 
   virtual void Initialize(mojo::ApplicationImpl* app) MOJO_OVERRIDE {
     mojo::InterfacePtr<mojo::ProfileService> profile_service;
     app->ConnectToService("mojo:profile_service", &profile_service);
     base::FilePath base_path;
     profile_service->GetPath(mojo::ProfileService::DIR_TEMP,
                              base::Bind(&OnPathReceived,
                                         base::Unretained(&base_path)));
     profile_service.WaitForIncomingMethodCall();
     DCHECK(!base_path.value().empty());
     base_path = base_path.Append(FILE_PATH_LITERAL("network_service"));
     context_.reset(new mojo::NetworkContext(base_path));
+    network_service_provider_.reset(new NetworkProvider(context_.get()));
   }
 
+  // mojo::ApplicationDelegate implementation.
   virtual bool ConfigureIncomingConnection(
       mojo::ApplicationConnection* connection) MOJO_OVERRIDE {
     DCHECK(context_);
-    connection->AddService<mojo::NetworkServiceImpl>(context_.get());
+    connection->AddServiceProvider(network_service_provider_.get());
     return true;
   }
 
  private:
   scoped_ptr<mojo::NetworkContext> context_;
+  scoped_ptr<NetworkProvider> network_service_provider_;
 };
 
 extern "C" APPLICATION_EXPORT MojoResult CDECL MojoMain(
     MojoHandle shell_handle) {
   base::CommandLine::Init(0, NULL);
 #if !defined(COMPONENT_BUILD)
   base::AtExitManager at_exit;
 #endif
 
   // The IO message loop allows us to use net::URLRequest on this thread.
   base::MessageLoopForIO loop;
 
   Delegate delegate;
   mojo::ApplicationImpl app(
       &delegate, mojo::MakeScopedHandle(mojo::MessagePipeHandle(shell_handle)));
 
   loop.Run();
   return MOJO_RESULT_OK;
 }