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

sync/engine/apply_control_data_updates_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.
 
 #include "base/format_macros.h"
 #include "base/location.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/stringprintf.h"
 #include "sync/engine/apply_control_data_updates.h"
@@ skipping 17 matching lines @@
 namespace syncer {
 
 using syncable::MutableEntry;
 using syncable::UNITTEST;
 using syncable::Id;
 
 class ApplyControlDataUpdatesTest : public ::testing::Test {
  public:
  protected:
   ApplyControlDataUpdatesTest() {}
-  virtual ~ApplyControlDataUpdatesTest() {}
+  ~ApplyControlDataUpdatesTest() override {}
 
-  virtual void SetUp() {
+  void SetUp() override {
     dir_maker_.SetUp();
     entry_factory_.reset(new TestEntryFactory(directory()));
   }
 
-  virtual void TearDown() {
-    dir_maker_.TearDown();
-  }
+  void TearDown() override { dir_maker_.TearDown(); }
 
   syncable::Directory* directory() {
     return dir_maker_.directory();
   }
 
   TestIdFactory id_factory_;
   scoped_ptr<TestEntryFactory> entry_factory_;
  private:
   base::MessageLoop loop_;  // Needed for directory init.
   TestDirectorySetterUpper dir_maker_;
@@ skipping 852 matching lines @@
                                            local_specifics);
   ApplyControlDataUpdates(directory());
 
   EXPECT_FALSE(entry_factory_->GetIsUnappliedForItem(experiment_handle));
   EXPECT_TRUE(
       entry_factory_->GetLocalSpecificsForItem(experiment_handle).
           experiments().keystore_encryption().enabled());
 }
 
 }  // namespace syncer