Use exactly one of final, override, and virtual

minidump/minidump_stream_writer.h

 // Copyright 2014 The Crashpad Authors. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //     http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
@@ skipping 33 matching lines @@
   //! obtain the directory entry for a stream.
   //!
   //! \note Valid only in #kStateWritable.
   const MINIDUMP_DIRECTORY* DirectoryListEntry() const;
 
  protected:
   MinidumpStreamWriter();
   ~MinidumpStreamWriter() {}
 
   // MinidumpWritable:
-  virtual bool Freeze() override;
+  bool Freeze() override;
 
  private:
   MINIDUMP_DIRECTORY directory_list_entry_;
 
   DISALLOW_COPY_AND_ASSIGN(MinidumpStreamWriter);
 };
 
 }  // namespace internal
 }  // namespace crashpad
 
 #endif  // CRASHPAD_MINIDUMP_STREAM_WRITER_H_