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

components/browser_watcher/exit_funnel_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/exit_funnel_win.h"
 
 #include <map>
 
 #include "base/command_line.h"
 #include "base/process/process_handle.h"
@@ skipping 10 matching lines @@
 
 namespace {
 
 const wchar_t kRegistryPath[] = L"Software\\ExitFunnelWinTest";
 
 class ExitFunnelWinTest : public testing::Test {
  public:
   typedef testing::Test Super;
   typedef std::map<base::string16, int64> EventMap;
 
-  virtual void SetUp() override {
+  void SetUp() override {
     Super::SetUp();
 
     override_manager_.OverrideRegistry(HKEY_CURRENT_USER);
   }
 
   base::string16 GetEventSubkey() {
     // There should be a single subkey named after this process' pid.
     base::win::RegistryKeyIterator it(HKEY_CURRENT_USER, kRegistryPath);
     EXPECT_EQ(1, it.SubkeyCount());
 
@@ skipping 65 matching lines @@
 
   base::TimeDelta one = base::TimeDelta::FromInternalValue(events[L"One"]);
   base::TimeDelta two = base::TimeDelta::FromInternalValue(events[L"Two"]);
 
   // Sleep is not accurate, it may over or under sleep. To minimize flakes,
   // this test only compares relative ordering of the events.
   ASSERT_LT(one, two);
 }
 
 }  // namespace browser_watcher