Standardize usage of virtual/override/final specifiers.

components/sync_driver/non_blocking_data_type_controller_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 <list>
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
@@ skipping 110 matching lines @@
 class NonBlockingDataTypeControllerTest : public testing::Test {
  public:
   NonBlockingDataTypeControllerTest()
       : type_sync_proxy_(syncer::DICTIONARY),
         model_thread_(new base::TestSimpleTaskRunner()),
         sync_thread_(new base::TestSimpleTaskRunner()),
         controller_(syncer::DICTIONARY, true),
         mock_context_proxy_(&mock_sync_context_, model_thread_, sync_thread_),
         auto_run_tasks_(true) {}
 
-  virtual ~NonBlockingDataTypeControllerTest() {}
+  ~NonBlockingDataTypeControllerTest() override {}
 
   // Connects the sync type proxy to the NonBlockingDataTypeController.
   void InitTypeSyncProxy() {
     controller_.InitializeType(model_thread_,
                                type_sync_proxy_.AsWeakPtrForUI());
     if (auto_run_tasks_) {
       RunAllTasks();
     }
   }
 
@@ skipping 289 matching lines @@
   // disables sittin in its queue.  Let's allow it to process them.
   RunQueuedSyncThreadTasks();
 
   // Let the model thread process any messages from the sync thread.
   RunQueuedModelThreadTasks();
   EXPECT_TRUE(type_sync_proxy_.IsPreferred());
   EXPECT_TRUE(type_sync_proxy_.IsConnected());
 }
 
 }  // namespace sync_driver