IPC::Message Refactoring: Move POSIX specific bits to PlatformFileAttachment

chrome/browser/extensions/api/file_system/file_system_api.h

 // Copyright (c) 2012 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 CHROME_BROWSER_EXTENSIONS_API_FILE_SYSTEM_FILE_SYSTEM_API_H_
 #define CHROME_BROWSER_EXTENSIONS_API_FILE_SYSTEM_FILE_SYSTEM_API_H_
 
 #include <string>
 #include <vector>
 
+#include "base/files/file.h"
 #include "base/files/file_path.h"
 #include "chrome/browser/extensions/chrome_extension_function.h"
 #include "chrome/common/extensions/api/file_system.h"
 #include "ui/shell_dialogs/select_file_dialog.h"
 
 namespace extensions {
 class ExtensionPrefs;
 
 namespace file_system_api {
 
@@ skipping 214 matching lines @@
                              FILESYSTEM_GETOBSERVEDENTRIES);
 
  protected:
   ~FileSystemGetObservedEntriesFunction() override {}
   bool RunSync() override;
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_FILE_SYSTEM_FILE_SYSTEM_API_H_