Use exactly one of final, override, and virtual

minidump/minidump_memory_writer_test_util.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 21 matching lines @@
 //!
 //! TestMinidumpMemoryWriter objects are created with a fixed base address and
 //! size, and will write the same byte (\a value) repeatedly, \a size times.
 class TestMinidumpMemoryWriter final : public MinidumpMemoryWriter {
  public:
   TestMinidumpMemoryWriter(uint64_t base_address, size_t size, uint8_t value);
   ~TestMinidumpMemoryWriter();
 
  protected:
   // MinidumpMemoryWriter:
-  virtual uint64_t MemoryRangeBaseAddress() const override;
-  virtual size_t MemoryRangeSize() const override;
+  uint64_t MemoryRangeBaseAddress() const override;
+  size_t MemoryRangeSize() const override;
 
   // MinidumpWritable:
-  virtual bool WillWriteAtOffsetImpl(off_t offset) override;
-  virtual bool WriteObject(FileWriterInterface* file_writer) override;
+  bool WillWriteAtOffsetImpl(off_t offset) override;
+  bool WriteObject(FileWriterInterface* file_writer) override;
 
  private:
   uint64_t base_address_;
   off_t expected_offset_;
   size_t size_;
   uint8_t value_;
 
   DISALLOW_COPY_AND_ASSIGN(TestMinidumpMemoryWriter);
 };
 
@@ skipping 37 matching lines @@
     const MINIDUMP_MEMORY_DESCRIPTOR* expected,
     const MINIDUMP_MEMORY_DESCRIPTOR* observed,
     const std::string& file_contents,
     uint8_t value,
     bool at_eof);
 
 }  // namespace test
 }  // namespace crashpad
 
 #endif  // CRASHPAD_MINIDUMP_MINIDUMP_MEMORY_WRITER_TEST_UTIL_H_