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

chrome/browser/supervised_user/supervised_user_sync_service_unittest.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 <string>
 
 #include "base/bind.h"
 #include "base/message_loop/message_loop.h"
 #include "base/prefs/scoped_user_pref_update.h"
 #include "base/strings/stringprintf.h"
@@ skipping 23 matching lines @@
 using syncer::SyncDataList;
 using syncer::SyncError;
 using syncer::SyncErrorFactory;
 using syncer::SyncMergeResult;
 
 namespace {
 
 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();
   }
 
   const SyncChangeList& changes() const { return change_list_; }
   SyncChange GetChange(const std::string& id) const;
 
  private:
   SyncChangeList change_list_;
 };
 
@@ skipping 297 matching lines @@
 
   EXPECT_FALSE(SupervisedUserSyncService::GetAvatarIndex(
       "chrome-avatar-index:x",
       &avatar));
 
   EXPECT_FALSE(SupervisedUserSyncService::GetAvatarIndex(
       "chromeos-avatar-index:5",
       &avatar));
 #endif
 }