Use exactly one of final, override, and virtual

snapshot/exception_snapshot_mac.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 @@
                   thread_t exception_thread,
                   exception_type_t exception,
                   const mach_exception_data_type_t* code,
                   mach_msg_type_number_t code_count,
                   thread_state_flavor_t flavor,
                   const natural_t* state,
                   mach_msg_type_number_t state_count);
 
   // ExceptionSnapshot:
 
-  virtual const CPUContext* Context() const override;
-  virtual uint64_t ThreadID() const override;
-  virtual uint32_t Exception() const override;
-  virtual uint32_t ExceptionInfo() const override;
-  virtual uint64_t ExceptionAddress() const override;
-  virtual const std::vector<uint64_t>& Codes() const override;
+  const CPUContext* Context() const override;
+  uint64_t ThreadID() const override;
+  uint32_t Exception() const override;
+  uint32_t ExceptionInfo() const override;
+  uint64_t ExceptionAddress() const override;
+  const std::vector<uint64_t>& Codes() const override;
 
  private:
 #if defined(ARCH_CPU_X86_FAMILY)
   union {
     CPUContextX86 x86;
     CPUContextX86_64 x86_64;
   } context_union_;
 #endif
   CPUContext context_;
   std::vector<uint64_t> codes_;
   uint64_t thread_id_;
   uint64_t exception_address_;
   exception_type_t exception_;
   uint32_t exception_code_0_;
   InitializationStateDcheck initialized_;
 
   DISALLOW_COPY_AND_ASSIGN(ExceptionSnapshotMac);
 };
 
 }  // namespace internal
 }  // namespace crashpad
 
 #endif  // CRASHPAD_SNAPSHOT_EXCEPTION_SNAPSHOT_MAC_H_