Use exactly one of final, override, and virtual

util/test/multiprocess.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 74 matching lines @@
   ~Multiprocess();
 
   //! \brief Establishes the proper testing environment prior to forking.
   //!
   //! Subclasses that solely implement a test should not need to override this
   //! method. Subclasses that do not implement tests but instead implement
   //! additional testing features on top of this class may override this method
   //! provided that they call the superclass’ implementation first as follows:
   //!
   //! \code
-  //!   virtual void PreFork() override {
+  //!   void PreFork() override {
   //!     ASSERT_NO_FATAL_FAILURE(Multiprocess::PreFork());
   //!
   //!     // Place subclass-specific pre-fork code here.
   //!   }
   //! \endcode
   //!
   //! Subclass implementations may signal failure by raising their own fatal
   //! gtest assertions.
   virtual void PreFork();
 
@@ skipping 76 matching lines @@
   int code_;
   TerminationReason reason_;
 
   DISALLOW_COPY_AND_ASSIGN(Multiprocess);
 };
 
 }  // namespace test
 }  // namespace crashpad
 
 #endif  // CRASHPAD_UTIL_TEST_MULTIPROCESS_H_