Standardize usage of virtual/override/final specifiers in google_apis/.

google_apis/gaia/gaia_oauth_client_unittest.cc

Index: google_apis/gaia/gaia_oauth_client_unittest.cc
diff --git a/google_apis/gaia/gaia_oauth_client_unittest.cc b/google_apis/gaia/gaia_oauth_client_unittest.cc
index e9d2a2963a890f63a11f1824ee3885a15cb7b656..a828bebbc4dff00e5f943add394c9bb7822db488 100644
--- a/google_apis/gaia/gaia_oauth_client_unittest.cc
+++ b/google_apis/gaia/gaia_oauth_client_unittest.cc
@@ -171,7 +171,7 @@ namespace gaia {
 
 class GaiaOAuthClientTest : public testing::Test {
  protected:
-  virtual void SetUp() override {
+  void SetUp() override {
     client_info_.client_id = "test_client_id";
     client_info_.client_secret = "test_client_secret";
     client_info_.redirect_uri = "test_redirect_uri";