Standardize usage of virtual/override/final in mojo/

mojo/services/test_service/test_service_application.h

Index: mojo/services/test_service/test_service_application.h
diff --git a/mojo/services/test_service/test_service_application.h b/mojo/services/test_service/test_service_application.h
index 47743a18bf5edf05ee15301cb8bbb68bc689ce3b..49fcdda4296de78b05d5ef8e6709096b7833b038 100644
--- a/mojo/services/test_service/test_service_application.h
+++ b/mojo/services/test_service/test_service_application.h
@@ -21,19 +21,18 @@ class TestServiceApplication : public ApplicationDelegate,
                                public InterfaceFactory<TestTimeService> {
  public:
   TestServiceApplication();
-  virtual ~TestServiceApplication();
+  ~TestServiceApplication() override;
 
   // ApplicationDelegate implementation.
-  virtual bool ConfigureIncomingConnection(
-      ApplicationConnection* connection) override;
+  bool ConfigureIncomingConnection(ApplicationConnection* connection) override;
 
   // InterfaceFactory<TestService> implementation.
-  virtual void Create(ApplicationConnection* connection,
-                      InterfaceRequest<TestService> request) override;
+  void Create(ApplicationConnection* connection,
+              InterfaceRequest<TestService> request) override;
 
   // InterfaceFactory<TestTimeService> implementation.
-  virtual void Create(ApplicationConnection* connection,
-                      InterfaceRequest<TestTimeService> request) override;
+  void Create(ApplicationConnection* connection,
+              InterfaceRequest<TestTimeService> request) override;
 
   void AddRef();
   void ReleaseRef();