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

components/browser_watcher/watcher_metrics_provider_win_unittest.cc

 // Copyright (c) 2014 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 "components/browser_watcher/watcher_metrics_provider_win.h"
 
 #include <cstdlib>
 
 #include "base/process/process_handle.h"
 #include "base/strings/string16.h"
 #include "base/strings/stringprintf.h"
 #include "base/test/histogram_tester.h"
 #include "base/test/test_reg_util_win.h"
 #include "base/win/registry.h"
 #include "components/browser_watcher/exit_funnel_win.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace browser_watcher {
 
 namespace {
 
 const wchar_t kRegistryPath[] = L"Software\\WatcherMetricsProviderWinTest";
 
 class WatcherMetricsProviderWinTest : public testing::Test {
  public:
   typedef testing::Test Super;
 
-  virtual void SetUp() override {
+  void SetUp() override {
     Super::SetUp();
 
     override_manager_.OverrideRegistry(HKEY_CURRENT_USER);
   }
 
   void AddProcessExitCode(bool use_own_pid, int exit_code) {
     int pid = 0;
     if (use_own_pid) {
       pid = base::GetCurrentProcId();
     } else {
@@ skipping 153 matching lines @@
   histogram_tester_.ExpectTotalCount("Stability.ExitFunnel.One", 0);
   histogram_tester_.ExpectTotalCount("Stability.ExitFunnel.Two", 0);
   histogram_tester_.ExpectTotalCount("Stability.ExitFunnel.Three", 0);
 
   // Make sure the subkey for the pseudo process has been deleted on reporting.
   base::win::RegistryKeyIterator it(HKEY_CURRENT_USER, kRegistryPath);
   ASSERT_EQ(it.SubkeyCount(), 1);
 }
 
 }  // namespace browser_watcher