Use exactly one of final, override, and virtual

snapshot/memory_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 31 matching lines @@
   //! \param[in] process_reader A reader for the process being snapshotted.
   //! \param[in] address The base address of the memory region to snapshot, in
   //!     the snapshot process’ address space.
   //! \param[in] size The size of the memory region to snapshot.
   void Initialize(ProcessReader* process_reader,
                   uint64_t address,
                   uint64_t size);
 
   // MemorySnapshot:
 
-  virtual uint64_t Address() const override;
-  virtual size_t Size() const override;
-  virtual bool Read(Delegate* delegate) const override;
+  uint64_t Address() const override;
+  size_t Size() const override;
+  bool Read(Delegate* delegate) const override;
 
  private:
   ProcessReader* process_reader_;  // weak
   uint64_t address_;
   uint64_t size_;
   InitializationStateDcheck initialized_;
 
   DISALLOW_COPY_AND_ASSIGN(MemorySnapshotMac);
 };
 
 }  // namespace internal
 }  // namespace crashpad
 
 #endif  // CRASHPAD_SNAPSHOT_MEMORY_SNAPSHOT_MAC_H_