Use exactly one of final, override, and virtual

minidump/minidump_string_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 42 matching lines @@
 template <typename Traits>
 class MinidumpStringWriter : public MinidumpWritable {
  public:
   MinidumpStringWriter();
   ~MinidumpStringWriter();
 
  protected:
   typedef typename Traits::MinidumpStringType MinidumpStringType;
   typedef typename Traits::StringType StringType;
 
-  virtual bool Freeze() override;
-  virtual size_t SizeOfObject() override;
-  virtual bool WriteObject(FileWriterInterface* file_writer) override;
+  bool Freeze() override;
+  size_t SizeOfObject() override;
+  bool WriteObject(FileWriterInterface* file_writer) override;
 
   //! \brief Sets the string to be written.
   //!
   //! \note Valid in #kStateMutable.
   void set_string(const StringType& string) { string_.assign(string); }
 
  private:
   MinidumpStringType string_base_;
   StringType string_;
 
@@ skipping 38 matching lines @@
   void SetUTF8(const std::string& string_utf8) { set_string(string_utf8); }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MinidumpUTF8StringWriter);
 };
 
 }  // namespace internal
 }  // namespace crashpad
 
 #endif  // CRASHPAD_MINIDUMP_MINIDUMP_STRING_WRITER_H_