Standardize usage of virtual/override/final in chrome/browser/extensions/

chrome/browser/extensions/api/sockets_tcp/sockets_tcp_apitest.cc

Index: chrome/browser/extensions/api/sockets_tcp/sockets_tcp_apitest.cc
diff --git a/chrome/browser/extensions/api/sockets_tcp/sockets_tcp_apitest.cc b/chrome/browser/extensions/api/sockets_tcp/sockets_tcp_apitest.cc
index 85af659e0f2524de11e0c9a5f3472cd44025cac3..02157e3282229128a61b9078731e938f504aa82d 100644
--- a/chrome/browser/extensions/api/sockets_tcp/sockets_tcp_apitest.cc
+++ b/chrome/browser/extensions/api/sockets_tcp/sockets_tcp_apitest.cc
@@ -38,12 +38,12 @@ class SocketsTcpApiTest : public ExtensionApiTest {
                             new extensions::MockHostResolverCreator()) {
   }
 
-  virtual void SetUpOnMainThread() override {
+  void SetUpOnMainThread() override {
     extensions::HostResolverWrapper::GetInstance()->SetHostResolverForTesting(
         resolver_creator_->CreateMockHostResolver());
   }
 
-  virtual void TearDownOnMainThread() override {
+  void TearDownOnMainThread() override {
     extensions::HostResolverWrapper::GetInstance()->
         SetHostResolverForTesting(NULL);
     resolver_creator_->DeleteMockHostResolver();