Standardize usage of virtual/override/final specifiers in sync/.

sync/engine/entity_tracker_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 "sync/engine/entity_tracker.h"
 
 #include "base/memory/scoped_ptr.h"
 #include "base/time/time.h"
 #include "sync/internal_api/public/base/model_type.h"
@@ skipping 16 matching lines @@
   EntityTrackerTest()
       : kServerId("ServerID"),
         kClientTag("some.sample.tag"),
         kClientTagHash(syncable::GenerateSyncableHash(PREFERENCES, kClientTag)),
         kCtime(base::Time::UnixEpoch() + base::TimeDelta::FromDays(10)),
         kMtime(base::Time::UnixEpoch() + base::TimeDelta::FromDays(20)) {
     specifics.mutable_preference()->set_name(kClientTag);
     specifics.mutable_preference()->set_value("pref.value");
   }
 
-  virtual ~EntityTrackerTest() {}
+  ~EntityTrackerTest() override {}
 
   const std::string kServerId;
   const std::string kClientTag;
   const std::string kClientTagHash;
   const base::Time kCtime;
   const base::Time kMtime;
   sync_pb::EntitySpecifics specifics;
 };
 
 // Construct a new entity from a server update.  Then receive another update.
@@ skipping 106 matching lines @@
                                        false,
                                        specifics));
 
   EXPECT_TRUE(entity->IsCommitPending());
 
   entity->ReceiveUpdate(33);  // Version 33 == 33.
   EXPECT_TRUE(entity->IsCommitPending());
 }
 
 }  // namespace syncer