Standardize usage of virtual/override/final specifiers.

components/invalidation/p2p_invalidator_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 "components/invalidation/p2p_invalidator.h"
 
 #include <cstddef>
 
 #include "components/invalidation/fake_invalidation_handler.h"
 #include "components/invalidation/invalidator_state.h"
@@ skipping 75 matching lines @@
   P2PInvalidatorTest()
       : next_sent_notification_to_reflect_(0) {
     default_enabled_ids_.insert(invalidation::ObjectId(10, "A"));
     default_enabled_ids_.insert(invalidation::ObjectId(10, "B"));
     delegate_.CreateInvalidator("sender",
                                 "fake_state",
                                 base::WeakPtr<InvalidationStateTracker>());
     delegate_.GetInvalidator()->RegisterHandler(&fake_handler_);
   }
 
-  virtual ~P2PInvalidatorTest() {
+  ~P2PInvalidatorTest() override {
     delegate_.GetInvalidator()->UnregisterHandler(&fake_handler_);
   }
 
   ObjectIdInvalidationMap MakeInvalidationMap(ObjectIdSet ids) {
     return ObjectIdInvalidationMap::InvalidateAll(ids);
   }
 
   // Simulate receiving all the notifications we sent out since last
   // time this was called.
   void ReflectSentNotifications() {
@@ skipping 242 matching lines @@
   EXPECT_EQ(5, fake_handler_.GetInvalidationCount());
 }
 
 INSTANTIATE_TYPED_TEST_CASE_P(
     P2PInvalidatorTest, InvalidatorTest,
     P2PInvalidatorTestDelegate);
 
 }  // namespace
 
 }  // namespace syncer