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

chrome/browser/supervised_user/supervised_user_registration_utility_unittest.cc

Index: chrome/browser/supervised_user/supervised_user_registration_utility_unittest.cc
diff --git a/chrome/browser/supervised_user/supervised_user_registration_utility_unittest.cc b/chrome/browser/supervised_user/supervised_user_registration_utility_unittest.cc
index ae4a66ba00c609d1f6dae22809ca9db7052ca6c1..a5831cba84915f55992309b316a5e76ce1ad16be 100644
--- a/chrome/browser/supervised_user/supervised_user_registration_utility_unittest.cc
+++ b/chrome/browser/supervised_user/supervised_user_registration_utility_unittest.cc
@@ -46,15 +46,13 @@ const char kSupervisedUserToken[] = "supervisedusertoken";
 class MockChangeProcessor : public SyncChangeProcessor {
  public:
   MockChangeProcessor() {}
-  virtual ~MockChangeProcessor() {}
+  ~MockChangeProcessor() override {}
 
   // SyncChangeProcessor implementation:
-  virtual SyncError ProcessSyncChanges(
-      const tracked_objects::Location& from_here,
-      const SyncChangeList& change_list) override;
+  SyncError ProcessSyncChanges(const tracked_objects::Location& from_here,
+                               const SyncChangeList& change_list) override;
 
-  virtual SyncDataList GetAllSyncData(syncer::ModelType type) const
-      override {
+  SyncDataList GetAllSyncData(syncer::ModelType type) const override {
     return SyncDataList();
   }
 
@@ -75,12 +73,12 @@ class MockSupervisedUserRefreshTokenFetcher
     : public SupervisedUserRefreshTokenFetcher {
  public:
   MockSupervisedUserRefreshTokenFetcher() {}
-  virtual ~MockSupervisedUserRefreshTokenFetcher() {}
+  ~MockSupervisedUserRefreshTokenFetcher() override {}
 
   // SupervisedUserRefreshTokenFetcher implementation:
-  virtual void Start(const std::string& supervised_user_id,
-                     const std::string& device_name,
-                     const TokenCallback& callback) override {
+  void Start(const std::string& supervised_user_id,
+             const std::string& device_name,
+             const TokenCallback& callback) override {
     GoogleServiceAuthError error(GoogleServiceAuthError::NONE);
     callback.Run(error, kSupervisedUserToken);
   }