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

chrome/browser/sync/test/integration/quiesce_status_change_checker.h

 // 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.
 
 #ifndef CHROME_BROWSER_SYNC_TEST_INTEGRATION_QUIESCE_STATUS_CHANGE_CHECKER_H_
 #define CHROME_BROWSER_SYNC_TEST_INTEGRATION_QUIESCE_STATUS_CHANGE_CHECKER_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 14 matching lines @@
 //
 // There is a race condition here.  If we manage to perform the check at
 // precisely the wrong time, we could end up seeing stale snapshot state
 // (crbug.com/95742), which would make us think that the client has finished
 // syncing when it hasn't.  In practice, this race is rare enough that it
 // doesn't cause test failures.
 class QuiesceStatusChangeChecker : public StatusChangeChecker {
  public:
   explicit QuiesceStatusChangeChecker(
       std::vector<ProfileSyncService*> services);
-  virtual ~QuiesceStatusChangeChecker();
+  ~QuiesceStatusChangeChecker() override;
 
   // Blocks until all clients have quiesced or we time out.
   void Wait();
 
   // A callback function for some helper objects.
   void OnServiceStateChanged(ProfileSyncService* service);
 
   // Implementation of StatusChangeChecker.
-  virtual bool IsExitConditionSatisfied() override;
-  virtual std::string GetDebugMessage() const override;
+  bool IsExitConditionSatisfied() override;
+  std::string GetDebugMessage() const override;
 
  private:
   std::vector<ProfileSyncService*> services_;
   ScopedVector<ProgressMarkerWatcher> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(QuiesceStatusChangeChecker);
 };
 
 #endif  // CHROME_BROWSER_SYNC_TEST_INTEGRATION_QUIESCE_STATUS_CHANGE_CHECKER_H_