Standardize usage of virtual/override/final in ui/

ui/message_center/test/run_all_unittests.cc

Index: ui/message_center/test/run_all_unittests.cc
diff --git a/ui/message_center/test/run_all_unittests.cc b/ui/message_center/test/run_all_unittests.cc
index 7c2c8cbdddcb8822307e681540b82fb7a2109965..fa53d67492a44182ab62da53b46362ab1a98aca6 100644
--- a/ui/message_center/test/run_all_unittests.cc
+++ b/ui/message_center/test/run_all_unittests.cc
@@ -25,7 +25,7 @@ class MessageCenterTestSuite : public base::TestSuite {
   MessageCenterTestSuite(int argc, char** argv) : base::TestSuite(argc, argv) {}
 
  protected:
-  virtual void Initialize() override {
+  void Initialize() override {
 #if defined(OS_MACOSX)
     mock_cr_app::RegisterMockCrApp();
 #else
@@ -39,7 +39,7 @@ class MessageCenterTestSuite : public base::TestSuite {
     ui::ResourceBundle::InitSharedInstanceWithPakPath(ui_test_pak_path);
   }
 
-  virtual void Shutdown() override {
+  void Shutdown() override {
     ui::ResourceBundle::CleanupSharedInstance();
     base::TestSuite::Shutdown();
   }