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

jingle/glue/chrome_async_socket_unittest.cc

Index: jingle/glue/chrome_async_socket_unittest.cc
diff --git a/jingle/glue/chrome_async_socket_unittest.cc b/jingle/glue/chrome_async_socket_unittest.cc
index 4449d382267e459635aea6211d128a2fe59c6d84..4742712d8e4c448b433f5387f03d701695ea2644 100644
--- a/jingle/glue/chrome_async_socket_unittest.cc
+++ b/jingle/glue/chrome_async_socket_unittest.cc
@@ -154,9 +154,9 @@ class ChromeAsyncSocketTest
     message_loop_.reset(new base::MessageLoop(pump.Pass()));
   }
 
-  virtual ~ChromeAsyncSocketTest() {}
+  ~ChromeAsyncSocketTest() override {}
 
-  virtual void SetUp() {
+  void SetUp() override {
     scoped_ptr<net::MockClientSocketFactory> mock_client_socket_factory(
         new net::MockClientSocketFactory());
     mock_client_socket_factory->AddSocketDataProvider(
@@ -189,7 +189,7 @@ class ChromeAsyncSocketTest
         this, &ChromeAsyncSocketTest::OnError);
   }
 
-  virtual void TearDown() {
+  void TearDown() override {
     // Run any tasks that we forgot to pump.
     message_loop_->RunUntilIdle();
     ExpectClosed();