Fix memory leak in file service.

services/file/file_system.h

 // Copyright 2016 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 SERVICES_FILE_FILE_SYSTEM_H_
 #define SERVICES_FILE_FILE_SYSTEM_H_
 
 #include "base/files/file_path.h"
 #include "components/filesystem/public/interfaces/directory.mojom.h"
-#include "mojo/public/cpp/bindings/interface_request.h"
-#include "mojo/public/cpp/bindings/strong_binding.h"
 #include "services/file/public/interfaces/file_system.mojom.h"
-#include "services/service_manager/public/cpp/connection.h"
 
 namespace filesystem {
 class LockTable;
 }
 
 namespace file {
 
 // A service which serves directories to callers.
 class FileSystem : public mojom::FileSystem {
  public:
@@ skipping 11 matching lines @@
  private:
   scoped_refptr<filesystem::LockTable> lock_table_;
   base::FilePath path_;
 
   DISALLOW_COPY_AND_ASSIGN(FileSystem);
 };
 
 }  // namespace file
 
 #endif  // SERVICES_FILE_FILE_SYSTEM_H_