Standardize usage of virtual/override/final specifiers.

chrome/browser/sync/sync_error_notifier_ash_unittest.cc

Index: chrome/browser/sync/sync_error_notifier_ash_unittest.cc
diff --git a/chrome/browser/sync/sync_error_notifier_ash_unittest.cc b/chrome/browser/sync/sync_error_notifier_ash_unittest.cc
index 1b4f5e712cb008964e09b08eedf65bae3a1cb263..a4ad85997b138bf3ab1aca4f70f8bb907ae49bc6 100644
--- a/chrome/browser/sync/sync_error_notifier_ash_unittest.cc
+++ b/chrome/browser/sync/sync_error_notifier_ash_unittest.cc
@@ -65,23 +65,21 @@ class ScreenTypeDelegateDesktop : public gfx::ScreenTypeDelegate {
 class FakeLoginUIService: public LoginUIService {
  public:
   FakeLoginUIService() : LoginUIService(NULL) {}
-  virtual ~FakeLoginUIService() {}
+  ~FakeLoginUIService() override {}
 };
 
 class FakeLoginUI : public LoginUIService::LoginUI {
  public:
   FakeLoginUI() : focus_ui_call_count_(0) {}
 
-  virtual ~FakeLoginUI() {}
+  ~FakeLoginUI() override {}
 
   int focus_ui_call_count() const { return focus_ui_call_count_; }
 
  private:
   // LoginUIService::LoginUI:
-  virtual void FocusUI() override {
-    ++focus_ui_call_count_;
-  }
-  virtual void CloseUI() override {}
+  void FocusUI() override { ++focus_ui_call_count_; }
+  void CloseUI() override {}
 
   int focus_ui_call_count_;
 };
@@ -94,9 +92,9 @@ KeyedService* BuildMockLoginUIService(
 class SyncErrorNotifierTest : public AshTestBase  {
  public:
   SyncErrorNotifierTest() {}
-  virtual ~SyncErrorNotifierTest() {}
+  ~SyncErrorNotifierTest() override {}
 
-  virtual void SetUp() override {
+  void SetUp() override {
     profile_manager_.reset(
         new TestingProfileManager(TestingBrowserProcess::GetGlobal()));
     ASSERT_TRUE(profile_manager_->SetUp());
@@ -128,7 +126,7 @@ class SyncErrorNotifierTest : public AshTestBase  {
     notification_ui_manager_ = g_browser_process->notification_ui_manager();
   }
 
-  virtual void TearDown() override {
+  void TearDown() override {
     error_notifier_->Shutdown();
     service_.reset();
 #if defined(OS_WIN)