replace OVERRIDE and FINAL with override and final in extensions/

extensions/browser/api/dns/dns_apitest.cc

Index: extensions/browser/api/dns/dns_apitest.cc
diff --git a/extensions/browser/api/dns/dns_apitest.cc b/extensions/browser/api/dns/dns_apitest.cc
index 8e269796e9ba3e9a6d4b721007a85c6d0dbc80d0..5d620177e17ca3bc00d4ff5c9dd8ac8119768686 100644
--- a/extensions/browser/api/dns/dns_apitest.cc
+++ b/extensions/browser/api/dns/dns_apitest.cc
@@ -26,13 +26,13 @@ class DnsApiTest : public ShellApiTest {
   DnsApiTest() : resolver_creator_(new MockHostResolverCreator()) {}
 
  private:
-  virtual void SetUpOnMainThread() OVERRIDE {
+  virtual void SetUpOnMainThread() override {
     ShellApiTest::SetUpOnMainThread();
     HostResolverWrapper::GetInstance()->SetHostResolverForTesting(
         resolver_creator_->CreateMockHostResolver());
   }
 
-  virtual void TearDownOnMainThread() OVERRIDE {
+  virtual void TearDownOnMainThread() override {
     HostResolverWrapper::GetInstance()->SetHostResolverForTesting(NULL);
     resolver_creator_->DeleteMockHostResolver();
     ShellApiTest::TearDownOnMainThread();