Update {virtual,override} to follow C++11 style in chrome.

chrome/browser/local_discovery/privet_device_lister_unittest.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/bind.h"
 #include "chrome/browser/local_discovery/privet_device_lister_impl.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using testing::SaveArg;
@@ skipping 151 matching lines @@
   MOCK_METHOD1(DeviceRemoved, void(const std::string& name));
 
   MOCK_METHOD0(DeviceCacheFlushed, void());
 };
 
 class PrivetDeviceListerTest : public testing::Test {
  public:
   PrivetDeviceListerTest() : mock_client_(&mock_delegate_) {
   }
 
-  virtual ~PrivetDeviceListerTest() {
+  ~PrivetDeviceListerTest() override {
   }
 
-  virtual void SetUp() override {
+  void SetUp() override {
     example_attrs_.push_back("tXtvers=1");
     example_attrs_.push_back("ty=My Printer");
     example_attrs_.push_back("nOte=This is my Printer");
     example_attrs_.push_back("CS=ONlInE");
     example_attrs_.push_back("id=");
 
     service_description_.service_name = "myprinter._privet._tcp.local";
     service_description_.address = net::HostPortPair("myprinter.local", 6006);
     service_description_.metadata = example_attrs_;
     service_description_.last_seen = base::Time() +
@@ skipping 117 matching lines @@
   testing::Mock::VerifyAndClear(&mock_delegate_);
 
   EXPECT_CALL(*service_watcher, DiscoverNewServices(false));
   privet_lister.DiscoverNewDevices(false);
 }
 
 
 }  // namespace
 
 }  // namespace local_discovery