Update from https://crrev.com/304418

cc/base/delayed_unique_notifier_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 <deque>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/test/test_pending_task.h"
 #include "base/test/test_simple_task_runner.h"
@@ skipping 17 matching lines @@
   void SetNow(base::TimeTicks now) { now_ = now; }
 
  private:
   base::TimeTicks now_;
 };
 
 class DelayedUniqueNotifierTest : public testing::Test {
  public:
   DelayedUniqueNotifierTest() : notification_count_(0) {}
 
-  virtual void SetUp() override {
+  void SetUp() override {
     notification_count_ = 0;
     task_runner_ = make_scoped_refptr(new base::TestSimpleTaskRunner);
   }
 
   void Notify() { ++notification_count_; }
 
   int NotificationCount() const { return notification_count_; }
 
   std::deque<base::TestPendingTask> TakePendingTasks() {
     std::deque<base::TestPendingTask> tasks = task_runner_->GetPendingTasks();
@@ skipping 277 matching lines @@
   ASSERT_EQ(0u, tasks.size());
 
   // Verify after the scheduled time happens there is still no task.
   notifier.SetNow(notifier.Now() + delay);
   tasks = TakePendingTasks();
   ASSERT_EQ(0u, tasks.size());
 }
 
 }  // namespace
 }  // namespace cc