Standardize usage of virtual/override/final specifiers.

remoting/host/token_validator_factory_impl_unittest.cc

Index: remoting/host/token_validator_factory_impl_unittest.cc
diff --git a/remoting/host/token_validator_factory_impl_unittest.cc b/remoting/host/token_validator_factory_impl_unittest.cc
index e8849846225845909df72f84c1bb861b5d2ef165..bfbed9f38b08dcd8915193dac82d56f820753496 100644
--- a/remoting/host/token_validator_factory_impl_unittest.cc
+++ b/remoting/host/token_validator_factory_impl_unittest.cc
@@ -88,7 +88,7 @@ class TokenValidatorFactoryImplTest : public testing::Test {
   }
 
  protected:
-  virtual void SetUp() override {
+  void SetUp() override {
     key_pair_ = RsaKeyPair::FromString(kTestRsaKeyPair);
     scoped_ptr<net::TestURLRequestContext> context(
         new SetResponseURLRequestContext());