Use exactly one of final, override, and virtual

util/mach/exception_ports_test.cc

 // 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 334 matching lines @@
     // Always zero. Crash() divides by this in order to trigger a crash. This is
     // structured as a static volatile int to ward off aggressive compiler
     // optimizations.
     static volatile int zero_;
 
     DISALLOW_COPY_AND_ASSIGN(Child);
   };
 
   // MachMultiprocess:
 
-  virtual void MachMultiprocessParent() override {
+  void MachMultiprocessParent() override {
     // Wait for the child process to be ready. It needs to have all of its
     // threads set up before proceeding if in kSetOutOfProcess mode.
     char c;
     CheckedReadFD(ReadPipeFD(), &c, 1);
     EXPECT_EQ('\0', c);
 
     mach_port_t local_port = LocalPort();
 
     // Get an ExceptionPorts object for the task and each of its threads.
     ExceptionPorts task_ports(ExceptionPorts::kTargetTypeTask, ChildTask());
@@ skipping 87 matching lines @@
 
       EXPECT_TRUE(handled_);
     }
 
     // Wait for the child process to exit or terminate, as indicated by it
     // closing its pipe. This keeps LocalPort() alive in the child as
     // RemotePort(), for the child’s use in its TestGetExceptionPorts().
     CheckedReadFDAtEOF(ReadPipeFD());
   }
 
-  virtual void MachMultiprocessChild() override {
+  void MachMultiprocessChild() override {
     Child child(this);
     child.Run();
   }
 
   SetType set_type_;
   SetOn set_on_;
   WhoCrashes who_crashes_;
 
   // true if an exception message was handled.
   bool handled_;
@@ skipping 94 matching lines @@
   if (geteuid() == 0) {
     EXPECT_TRUE(rv);
   } else {
     EXPECT_FALSE(rv);
   }
 }
 
 }  // namespace
 }  // namespace test
 }  // namespace crashpad