file_browser_handler/ -> remove linked_ptr usage.

chrome/common/extensions/api/file_browser_handlers/file_browser_handler.h

 // Copyright 2013 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_COMMON_EXTENSIONS_API_FILE_BROWSER_HANDLERS_FILE_BROWSER_HANDLER_H_
 #define CHROME_COMMON_EXTENSIONS_API_FILE_BROWSER_HANDLERS_FILE_BROWSER_HANDLER_H_
 
 #include <string>
 #include <vector>
 
 #include "extensions/common/extension.h"
 #include "extensions/common/manifest_handler.h"
 #include "extensions/common/url_pattern.h"
 #include "extensions/common/url_pattern_set.h"
 
 class GURL;
 class URLPattern;
 
 // FileBrowserHandler encapsulates the state of a file browser action.
 class FileBrowserHandler {
  public:
-  typedef std::vector<linked_ptr<FileBrowserHandler> > List;
+  using List = std::vector<std::unique_ptr<FileBrowserHandler>>;
 
   FileBrowserHandler();
   ~FileBrowserHandler();
 
   // extension id
   std::string extension_id() const { return extension_id_; }
   void set_extension_id(const std::string& extension_id) {
     extension_id_ = extension_id;
   }
 
@@ skipping 42 matching lines @@
   // extension manifest).
   std::string extension_id_;
   std::string title_;
   std::string default_icon_path_;
   // The id for the FileBrowserHandler, for example: "PdfFileAction".
   std::string id_;
   unsigned int file_access_permission_flags_;
 
   // A list of file filters.
   extensions::URLPatternSet url_set_;
+
+  DISALLOW_COPY_AND_ASSIGN(FileBrowserHandler);
 };
 
 // Parses the "file_browser_handlers" extension manifest key.
 class FileBrowserHandlerParser : public extensions::ManifestHandler {
  public:
   FileBrowserHandlerParser();
   ~FileBrowserHandlerParser() override;
 
   bool Parse(extensions::Extension* extension, base::string16* error) override;
 
  private:
   const std::vector<std::string> Keys() const override;
+
+  DISALLOW_COPY_AND_ASSIGN(FileBrowserHandlerParser);
 };
 
 #endif  // CHROME_COMMON_EXTENSIONS_API_FILE_BROWSER_HANDLERS_FILE_BROWSER_HANDLER_H_