Convert //chrome/browser/chromeos from scoped_ptr to std::unique_ptr

chrome/browser/chromeos/extensions/file_manager/file_browser_handler_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.
 
 // File contains the fileBrowserHandlerInternal.selectFile extension function.
 // The function prompts user to select a file path to be used by the caller. It
 // will fail if it isn't invoked by a user gesture (e.g. a mouse click or a
 // keyboard key press).
 // Note that the target file is never actually created by this function, even
 // if the selected path doesn't exist.
@@ skipping 113 matching lines @@
   // * boolean 'success', which will be equal to |success|.
   // * object 'entry', which will be set only when |success| is true, and the
   //   conversion to |entry_definition| was successful. In such case, it will
   //   contain information needed to create a FileEntry object for the selected
   //   file.
   void Respond(const file_manager::util::EntryDefinition& entry_definition,
                bool success);
 
   // Factory used to create FileSelector to be used for prompting user to select
   // file.
-  scoped_ptr<file_manager::FileSelectorFactory> file_selector_factory_;
+  std::unique_ptr<file_manager::FileSelectorFactory> file_selector_factory_;
   // Whether user gesture check is disabled. This should be true only in tests.
   bool user_gesture_check_enabled_;
 
   // List of permissions and paths that have to be granted for the selected
   // files.
   std::vector<std::pair<base::FilePath, int> > permissions_to_grant_;
 
   DECLARE_EXTENSION_FUNCTION("fileBrowserHandlerInternal.selectFile",
                              FILEBROWSERHANDLERINTERNAL_SELECTFILE)
 };
 
 #endif  // CHROME_BROWSER_CHROMEOS_EXTENSIONS_FILE_MANAGER_FILE_BROWSER_HANDLER_API_H_