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

base/threading/sequenced_worker_pool_unittest.cc

 // Copyright (c) 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/threading/sequenced_worker_pool.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/compiler_specific.h"
@@ skipping 165 matching lines @@
   size_t started_events_;
 };
 
 class SequencedWorkerPoolTest : public testing::Test {
  public:
   SequencedWorkerPoolTest()
       : tracker_(new TestTracker) {
     ResetPool();
   }
 
-  virtual ~SequencedWorkerPoolTest() {}
-
-  virtual void SetUp() override {}
-
-  virtual void TearDown() override {
-    pool()->Shutdown();
-  }
+  void TearDown() override { pool()->Shutdown(); }
 
   const scoped_refptr<SequencedWorkerPool>& pool() {
     return pool_owner_->pool();
   }
   TestTracker* tracker() { return tracker_.get(); }
 
   // Destroys the SequencedWorkerPool instance, blocking until it is fully shut
   // down, and creates a new instance.
   void ResetPool() {
     pool_owner_.reset(new SequencedWorkerPoolOwner(kNumWorkerThreads, "test"));
@@ skipping 712 matching lines @@
     SequencedWorkerPoolSequencedTaskRunner, TaskRunnerTest,
     SequencedWorkerPoolSequencedTaskRunnerTestDelegate);
 
 INSTANTIATE_TYPED_TEST_CASE_P(
     SequencedWorkerPoolSequencedTaskRunner, SequencedTaskRunnerTest,
     SequencedWorkerPoolSequencedTaskRunnerTestDelegate);
 
 }  // namespace
 
 }  // namespace base