[Extensions] Convert APIs to use movable types [5]

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>
 
@@ skipping 219 matching lines @@
   static void SkipDirectoryConfirmationForTest();
   static void AutoCancelDirectoryConfirmationForTest();
   static void StopSkippingDirectoryConfirmationForTest();
   // Call this with the directory for test file paths. On Chrome OS, accessed
   // path needs to be explicitly registered for smooth integration with Google
   // Drive support.
   static void RegisterTempExternalFileSystemForTest(const std::string& name,
                                                     const base::FilePath& path);
   DECLARE_EXTENSION_FUNCTION("fileSystem.chooseEntry", FILESYSTEM_CHOOSEENTRY)
 
-  typedef std::vector<linked_ptr<api::file_system::AcceptOption>> AcceptOptions;
+  typedef std::vector<api::file_system::AcceptOption> AcceptOptions;
 
   static void BuildFileTypeInfo(
       ui::SelectFileDialog::FileTypeInfo* file_type_info,
       const base::FilePath::StringType& suggested_extension,
       const AcceptOptions* accepts,
       const bool* acceptsAllTypes);
   static void BuildSuggestion(const std::string* opt_name,
                               base::FilePath* suggested_name,
                               base::FilePath::StringType* suggested_extension);
 
@@ skipping 163 matching lines @@
   ExtensionFunction::ResponseAction Run() override;
 
  private:
   ChromeExtensionFunctionDetails chrome_details_;
 };
 #endif
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_FILE_SYSTEM_FILE_SYSTEM_API_H_