Use exactly one of final, override, and virtual

minidump/minidump_file_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 44 matching lines @@
 
   // MinidumpWritable:
 
   //! \copydoc internal::MinidumpWritable::WriteEverything()
   //!
   //! This method does not initially write the final value for
   //! MINIDUMP_HEADER::Signature. After all child objects have been written, it
   //! rewinds to the beginning of the file and writes the correct value for this
   //! field. This prevents incompletely-written minidump files from being
   //! mistaken for valid ones.
-  virtual bool WriteEverything(FileWriterInterface* file_writer) override;
+  bool WriteEverything(FileWriterInterface* file_writer) override;
 
  protected:
   // MinidumpWritable:
-  virtual bool Freeze() override;
-  virtual size_t SizeOfObject() override;
-  virtual std::vector<MinidumpWritable*> Children() override;
-  virtual bool WillWriteAtOffsetImpl(off_t offset) override;
-  virtual bool WriteObject(FileWriterInterface* file_writer) override;
+  bool Freeze() override;
+  size_t SizeOfObject() override;
+  std::vector<MinidumpWritable*> Children() override;
+  bool WillWriteAtOffsetImpl(off_t offset) override;
+  bool WriteObject(FileWriterInterface* file_writer) override;
 
  private:
   MINIDUMP_HEADER header_;
   std::vector<internal::MinidumpStreamWriter*> streams_;  // weak
 
   // Protects against multiple streams with the same ID being added.
   std::set<MinidumpStreamType> stream_types_;
 
   DISALLOW_COPY_AND_ASSIGN(MinidumpFileWriter);
 };
 
 }  // namespace crashpad
 
 #endif  // CRASHPAD_MINIDUMP_MINIDUMP_WRITER_H_