Privatize StrongBinding lifetime management

components/filesystem/file_system_app.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 "components/filesystem/file_system_app.h"
 
 #include <memory>
 
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
+#include "mojo/public/cpp/bindings/strong_binding.h"
 #include "services/shell/public/cpp/connection.h"
 #include "services/shell/public/cpp/connector.h"
 
 #if defined(OS_WIN)
 #include "base/base_paths_win.h"
 #include "base/path_service.h"
 #include "base/strings/utf_string_conversions.h"
 #elif defined(OS_ANDROID)
 #include "base/base_paths_android.h"
 #include "base/path_service.h"
@@ skipping 22 matching lines @@
 }
 
 bool FileSystemApp::OnConnect(const shell::Identity& remote_identity,
                               shell::InterfaceRegistry* registry) {
   registry->AddInterface<mojom::FileSystem>(this);
   return true;
 }
 
 // |InterfaceFactory<Files>| implementation:
 void FileSystemApp::Create(const shell::Identity& remote_identity,
-                           mojo::InterfaceRequest<mojom::FileSystem> request) {
-  new FileSystemImpl(remote_identity, std::move(request), GetUserDataDir(),
-                     lock_table_);
+                           mojom::FileSystemRequest request) {
+  mojo::MakeStrongBinding(base::MakeUnique<FileSystemImpl>(
+                              remote_identity, GetUserDataDir(), lock_table_),
+                          std::move(request));
 }
 
 //static
 base::FilePath FileSystemApp::GetUserDataDir() {
   base::FilePath path;
 
   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
   if (command_line->HasSwitch(kUserDataDir)) {
     path = command_line->GetSwitchValuePath(kUserDataDir);
   } else {
@@ skipping 14 matching lines @@
     path = path.Append(FILE_PATH_LITERAL("filesystem"));
   }
 
   if (!base::PathExists(path))
     base::CreateDirectory(path);
 
   return path;
 }
 
 }  // namespace filesystem