Standardize usage of virtual/override/final specifiers.

remoting/host/chromoting_host_unittest.cc

Index: remoting/host/chromoting_host_unittest.cc
diff --git a/remoting/host/chromoting_host_unittest.cc b/remoting/host/chromoting_host_unittest.cc
index 51bdd4370fb3de7f90753d12b6d753f020e8c974..84b4f7deee45e225cb95d21ba0c42051de08ec2a 100644
--- a/remoting/host/chromoting_host_unittest.cc
+++ b/remoting/host/chromoting_host_unittest.cc
@@ -70,7 +70,7 @@ class ChromotingHostTest : public testing::Test {
   ChromotingHostTest() {
   }
 
-  virtual void SetUp() override {
+  void SetUp() override {
     task_runner_ = new AutoThreadTaskRunner(
         message_loop_.message_loop_proxy(),
         base::Bind(&ChromotingHostTest::QuitMainMessageLoop,
@@ -225,7 +225,7 @@ class ChromotingHostTest : public testing::Test {
     host_->clients_.push_back(client.release());
   }
 
-  virtual void TearDown() override {
+  void TearDown() override {
     // Make sure that the host has been properly deleted.
     DCHECK(host_.get() == NULL);
   }