Some more virtual/override updates.

mojo/shell/incoming_connection_listener_unittest.cc

Index: mojo/shell/incoming_connection_listener_unittest.cc
diff --git a/mojo/shell/incoming_connection_listener_unittest.cc b/mojo/shell/incoming_connection_listener_unittest.cc
index 61b0a5e71ddb1479c070ff81044da37f9124edbf..112782db595471cc7e34168379cd1d0d4066d7b1 100644
--- a/mojo/shell/incoming_connection_listener_unittest.cc
+++ b/mojo/shell/incoming_connection_listener_unittest.cc
@@ -60,9 +60,9 @@ void OnConnect(base::Closure quit_callback, int rv) {
 class IncomingConnectionListenerTest : public testing::Test {
  public:
   IncomingConnectionListenerTest() {}
-  virtual ~IncomingConnectionListenerTest() {}
+  ~IncomingConnectionListenerTest() override {}
 
-  virtual void SetUp() override {
+  void SetUp() override {
     ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
     socket_path_ = temp_dir_.path().Append(FILE_PATH_LITERAL("socket"));
   }