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

sync/engine/syncer_unittest.cc

 // Copyright 2012 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.
 //
 // Syncer unit tests. Unfortunately a lot of these tests
 // are outdated and need to be reworked and updated.
 
 #include <algorithm>
 #include <limits>
 #include <list>
@@ skipping 259 matching lines @@
   }
 
   void SyncShareConfigure() {
     ResetSession();
     EXPECT_TRUE(syncer_->ConfigureSyncShare(
             context_->GetEnabledTypes(),
             sync_pb::GetUpdatesCallerInfo::RECONFIGURATION,
             session_.get()));
   }
 
-  virtual void SetUp() {
+  void SetUp() override {
     dir_maker_.SetUp();
     mock_server_.reset(new MockConnectionManager(directory(),
                                                  &cancelation_signal_));
     debug_info_getter_.reset(new MockDebugInfoGetter);
     EnableDatatype(BOOKMARKS);
     EnableDatatype(NIGORI);
     EnableDatatype(PREFERENCES);
     EnableDatatype(NIGORI);
     workers_.push_back(scoped_refptr<ModelSafeWorker>(
         new FakeModelWorker(GROUP_PASSIVE)));
@@ skipping 26 matching lines @@
     directory()->GetChildHandlesById(&trans, trans.root_id(), &children);
     ASSERT_EQ(0u, children.size());
     saw_syncer_event_ = false;
     root_id_ = TestIdFactory::root();
     parent_id_ = ids_.MakeServer("parent id");
     child_id_ = ids_.MakeServer("child id");
     directory()->set_store_birthday(mock_server_->store_birthday());
     mock_server_->SetKeystoreKey("encryption_key");
   }
 
-  virtual void TearDown() {
+  void TearDown() override {
     model_type_registry_->UnregisterDirectoryTypeDebugInfoObserver(
         &debug_info_cache_);
     mock_server_.reset();
     delete syncer_;
     syncer_ = NULL;
     dir_maker_.TearDown();
   }
 
   void WriteTestDataToEntry(WriteTransaction* trans, MutableEntry* entry) {
     EXPECT_FALSE(entry->GetIsDir());
@@ skipping 4946 matching lines @@
     EXPECT_EQ("xyz", final_monitor_records["xyz"].extension_id);
     EXPECT_EQ(2049U, final_monitor_records["ABC"].bookmark_write_count);
     EXPECT_EQ(4U,    final_monitor_records["xyz"].bookmark_write_count);
   } else {
     EXPECT_TRUE(final_monitor_records.empty())
         << "Should not restore records after successful bookmark commit.";
   }
 }
 
 }  // namespace syncer