Standardize usage of virtual/override/final specifiers.

components/webdata/common/web_database_migration_unittest.cc

Index: components/webdata/common/web_database_migration_unittest.cc
diff --git a/components/webdata/common/web_database_migration_unittest.cc b/components/webdata/common/web_database_migration_unittest.cc
index 161d8ce4eb980bcfb250d501e76351e0b186af4c..3174fc6706f72ed7c052c23ec6a78b3e90bd0038 100644
--- a/components/webdata/common/web_database_migration_unittest.cc
+++ b/components/webdata/common/web_database_migration_unittest.cc
@@ -170,11 +170,9 @@ std::string RemoveQuotes(const std::string& has_quotes) {
 class WebDatabaseMigrationTest : public testing::Test {
  public:
   WebDatabaseMigrationTest() {}
-  virtual ~WebDatabaseMigrationTest() {}
+  ~WebDatabaseMigrationTest() override {}
 
-  virtual void SetUp() {
-    ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
-  }
+  void SetUp() override { ASSERT_TRUE(temp_dir_.CreateUniqueTempDir()); }
 
   // Load the database via the WebDatabase class and migrate the database to
   // the current version.