Standardize usage of virtual/override/final specifiers.

remoting/host/it2me/it2me_native_messaging_host_unittest.cc

Index: remoting/host/it2me/it2me_native_messaging_host_unittest.cc
diff --git a/remoting/host/it2me/it2me_native_messaging_host_unittest.cc b/remoting/host/it2me/it2me_native_messaging_host_unittest.cc
index e0f98f278bc4693e32bca1baaaa53c2160df658c..89702b13c952e993da67544e224cf01bbdf95016 100644
--- a/remoting/host/it2me/it2me_native_messaging_host_unittest.cc
+++ b/remoting/host/it2me/it2me_native_messaging_host_unittest.cc
@@ -166,10 +166,10 @@ class MockIt2MeHostFactory : public It2MeHostFactory {
 class It2MeNativeMessagingHostTest : public testing::Test {
  public:
   It2MeNativeMessagingHostTest() {}
-  virtual ~It2MeNativeMessagingHostTest() {}
+  ~It2MeNativeMessagingHostTest() override {}
 
-  virtual void SetUp() override;
-  virtual void TearDown() override;
+  void SetUp() override;
+  void TearDown() override;
 
  protected:
   scoped_ptr<base::DictionaryValue> ReadMessageFromOutputPipe();