Standardize usage of virtual/override/final specifiers.

components/ownership/owner_key_util_impl_unittest.cc

Index: components/ownership/owner_key_util_impl_unittest.cc
diff --git a/components/ownership/owner_key_util_impl_unittest.cc b/components/ownership/owner_key_util_impl_unittest.cc
index 950201e0ef650a446e863c2daad3d894bab4ded8..d79b3b23fa8854bcf408d244f59881482e0d9e85 100644
--- a/components/ownership/owner_key_util_impl_unittest.cc
+++ b/components/ownership/owner_key_util_impl_unittest.cc
@@ -49,9 +49,9 @@ const uint8 kTestKeyData[] = {
 class OwnerKeyUtilImplTest : public testing::Test {
  protected:
   OwnerKeyUtilImplTest() {}
-  virtual ~OwnerKeyUtilImplTest() {}
+  ~OwnerKeyUtilImplTest() override {}
 
-  virtual void SetUp() override {
+  void SetUp() override {
     ASSERT_TRUE(tmpdir_.CreateUniqueTempDir());
     key_file_ = tmpdir_.path().Append(FILE_PATH_LITERAL("key"));
     util_ = new OwnerKeyUtilImpl(key_file_);