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

chrome/installer/setup/install_worker_unittest.cc

 // Copyright (c) 2012 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 "chrome/installer/setup/install_worker.h"
 
 #include "base/win/registry.h"
 #include "base/version.h"
 #include "chrome/common/chrome_constants.h"
 #include "chrome/installer/setup/setup_util.h"
@@ skipping 473 matching lines @@
 }  // namespace
 
 // A test class for worker functions that manipulate the old IE low rights
 // policies.
 // Parameters:
 // bool : system_level_
 // bool : multi_install_
 class OldIELowRightsTests : public InstallWorkerTest,
   public ::testing::WithParamInterface<std::tr1::tuple<bool, bool> > {
  protected:
-  virtual void SetUp() override {
+  void SetUp() override {
     InstallWorkerTest::SetUp();
 
     const ParamType& param = GetParam();
     system_level_ = std::tr1::get<0>(param);
     multi_install_ = std::tr1::get<1>(param);
     root_key_ = system_level_ ? HKEY_LOCAL_MACHINE : HKEY_CURRENT_USER;
 
     installation_state_.reset(new MockInstallationState());
     AddChromeFrameToInstallationState(system_level_, multi_install_,
                                       installation_state_.get());
@@ skipping 293 matching lines @@
               prod_type_list[i_type_check]);
           bool prod_expect = (mach_after & (1 << i_type_check)) != 0;
           EXPECT_EQ(prod_expect, prod_res);
         }
       }
     }
   }
 }
 
 #endif  // defined(GOOGLE_CHROME_BUILD)