Update from https://crrev.com/304418

cc/base/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 "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/message_loop/message_loop_proxy.h"
 #include "base/run_loop.h"
 #include "base/single_thread_task_runner.h"
 #include "cc/base/unique_notifier.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace cc {
 namespace {
 
 class UniqueNotifierTest : public testing::Test {
  public:
   UniqueNotifierTest() : notification_count_(0) {}
 
-  virtual void SetUp() override { ResetNotificationCount(); }
+  void SetUp() override { ResetNotificationCount(); }
 
   void Notify() { ++notification_count_; }
 
   int NotificationCount() const { return notification_count_; }
 
   void ResetNotificationCount() { notification_count_ = 0; }
 
  protected:
   int notification_count_;
 };
@@ skipping 22 matching lines @@
     notifier.Schedule();
   }
 
   // Notifier went out of scope, so we don't expect to get a notification.
   base::RunLoop().RunUntilIdle();
   EXPECT_EQ(2, NotificationCount());
 }
 
 }  // namespace
 }  // namespace cc