Use exactly one of final, override, and virtual

minidump/minidump_memory_writer_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 182 matching lines @@
 class TestMemoryStream final : public internal::MinidumpStreamWriter {
  public:
   TestMemoryStream(uint64_t base_address, size_t size, uint8_t value)
       : MinidumpStreamWriter(), memory_(base_address, size, value) {}
 
   ~TestMemoryStream() {}
 
   TestMinidumpMemoryWriter* memory() { return &memory_; }
 
   // MinidumpStreamWriter:
-  virtual MinidumpStreamType StreamType() const override {
+  MinidumpStreamType StreamType() const override {
     return kBogusStreamType;
   }
 
  protected:
   // MinidumpWritable:
-  virtual size_t SizeOfObject() override {
+  size_t SizeOfObject() override {
     EXPECT_GE(state(), kStateFrozen);
     return 0;
   }
 
-  virtual std::vector<MinidumpWritable*> Children() override {
+  std::vector<MinidumpWritable*> Children() override {
     EXPECT_GE(state(), kStateFrozen);
     std::vector<MinidumpWritable*> children(1, memory());
     return children;
   }
 
-  virtual bool WriteObject(FileWriterInterface* file_writer) override {
+  bool WriteObject(FileWriterInterface* file_writer) override {
     EXPECT_EQ(kStateWritable, state());
     return true;
   }
 
  private:
   TestMinidumpMemoryWriter memory_;
 
   DISALLOW_COPY_AND_ASSIGN(TestMemoryStream);
 };
 
@@ skipping 60 matching lines @@
                                               &memory_list->MemoryRanges[1],
                                               file_writer.string(),
                                               kValue1,
                                               true);
   }
 }
 
 }  // namespace
 }  // namespace test
 }  // namespace crashpad