Standardize usage of virtual/override/final in chrome/browser/sync/

chrome/browser/sync/test/integration/single_client_backup_rollback_test.cc

 // Copyright 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 "base/command_line.h"
 #include "base/files/file_util.h"
 #include "base/message_loop/message_loop.h"
 #include "base/prefs/pref_service.h"
 #include "base/run_loop.h"
 #include "base/test/test_timeouts.h"
@@ skipping 64 matching lines @@
 };
 
 // Waits until the ProfileSyncService's backend is in IDLE mode.
 class SyncBackendStoppedChecker : public ProfileSyncServiceBase::Observer {
  public:
   explicit SyncBackendStoppedChecker(ProfileSyncService* service)
       : pss_(service),
         timeout_(TestTimeouts::action_max_timeout()),
         done_(false) {}
 
-  virtual void OnStateChanged() override {
+  void OnStateChanged() override {
     if (ProfileSyncService::IDLE == pss_->backend_mode()) {
       done_ = true;
       run_loop_.Quit();
     }
   }
 
   bool Wait() {
     pss_->AddObserver(this);
     if (ProfileSyncService::IDLE == pss_->backend_mode())
       return true;
@@ skipping 18 matching lines @@
 class SyncRollbackChecker : public ProfileSyncServiceBase::Observer,
                             public BrowsingDataRemover::Observer {
  public:
   explicit SyncRollbackChecker(ProfileSyncService* service)
       : pss_(service),
         timeout_(TestTimeouts::action_max_timeout()),
         rollback_started_(false),
         clear_done_(false) {}
 
   // ProfileSyncServiceBase::Observer implementation.
-  virtual void OnStateChanged() override {
+  void OnStateChanged() override {
     if (ProfileSyncService::ROLLBACK == pss_->backend_mode()) {
       rollback_started_ = true;
       if (clear_done_)
         run_loop_.Quit();
     }
   }
 
   // BrowsingDataRemoverObserver::Observer implementation.
-  virtual void OnBrowsingDataRemoverDone() override {
+  void OnBrowsingDataRemoverDone() override {
     clear_done_ = true;
     if (rollback_started_) {
       run_loop_.Quit();
     }
   }
 
   bool Wait() {
     pss_->AddObserver(this);
     pss_->SetBrowsingDataRemoverObserverForTesting(this);
     base::MessageLoop::current()->PostDelayedTask(
@@ skipping 289 matching lines @@
   ASSERT_TRUE(rollback_checker.Wait());
   SyncBackendStoppedChecker shutdown_checker(GetSyncService(0));
   ASSERT_TRUE(shutdown_checker.Wait());
 
   // Verify bookmarks are unchanged.
   ASSERT_EQ(3, sub_folder->child_count());
   ASSERT_EQ(GURL(kUrl1), sub_folder->GetChild(0)->url());
   ASSERT_EQ(GURL(kUrl2), sub_folder->GetChild(1)->url());
   ASSERT_EQ(GURL(kUrl3), sub_folder->GetChild(2)->url());
 }