Standardize usage of virtual/override/final specifiers.

net/quic/quic_ack_notifier_test.cc

 // Copyright 2013 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 "net/quic/quic_ack_notifier.h"
 
 #include "net/quic/test_tools/quic_test_utils.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using testing::_;
 
 namespace net {
 namespace test {
 namespace {
 
 class QuicAckNotifierTest : public ::testing::Test {
  protected:
   QuicAckNotifierTest() : zero_(QuicTime::Delta::Zero()) {}
 
-  virtual void SetUp() {
+  void SetUp() override {
     delegate_ = new MockAckNotifierDelegate;
     notifier_.reset(new QuicAckNotifier(delegate_));
 
     notifier_->AddSequenceNumber(26, 100);
     notifier_->AddSequenceNumber(99, 20);
     notifier_->AddSequenceNumber(1234, 3);
   }
 
   MockAckNotifierDelegate* delegate_;
   scoped_ptr<QuicAckNotifier> notifier_;
@@ skipping 39 matching lines @@
               OnAckNotification(3, 123, 0, 0, third_delta))
       .Times(1);
   EXPECT_FALSE(notifier_->OnAck(26, first_delta));
   EXPECT_FALSE(notifier_->OnAck(99, second_delta));
   EXPECT_TRUE(notifier_->OnAck(1234, third_delta));
 }
 
 }  // namespace
 }  // namespace test
 }  // namespace net