Remove last usages of ScopedVector in extensions/

extensions/browser/external_install_info.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 EXTENSIONS_BROWSER_EXTERNAL_INSTALL_INFO_H_
 #define EXTENSIONS_BROWSER_EXTERNAL_INSTALL_INFO_H_
 
 #include "base/files/file_path.h"
-#include "base/memory/scoped_vector.h"
 #include "extensions/common/manifest.h"
 
 class GURL;
 
 namespace base {
 class Version;
 }
 
 namespace extensions {
 
@@ skipping 38 matching lines @@
                                bool mark_acknowledged);
   ~ExternalInstallInfoUpdateUrl() override;
 
   std::string install_parameter;
   std::unique_ptr<GURL> update_url;
   Manifest::Location download_location;
 };
 
 }  // namespace extensions
 #endif  // EXTENSIONS_BROWSER_EXTERNAL_INSTALL_INFO_H_