Standardize usage of virtual/override/final specifiers.

media/cast/net/frame_id_wrap_helper_test.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 <gtest/gtest.h>
 #include "media/cast/cast_defines.h"
 #include "media/cast/net/cast_transport_defines.h"
 
 namespace media {
 namespace cast {
 
 class FrameIdWrapHelperTest : public ::testing::Test {
  protected:
   FrameIdWrapHelperTest() {}
-  virtual ~FrameIdWrapHelperTest() {}
+  ~FrameIdWrapHelperTest() override {}
 
   void RunOneTest(uint32 starting_point, int iterations) {
     const int window_size = 127;
     uint32 window_base = starting_point;
     frame_id_wrap_helper_.largest_frame_id_seen_ = starting_point;
     for (int i = 0; i < iterations; i++) {
       uint32 largest_frame_id_seen =
           frame_id_wrap_helper_.largest_frame_id_seen_;
       int offset = rand() % window_size;
       uint32 frame_id = window_base + offset;
@@ skipping 45 matching lines @@
   for (int i = 0; i < 50000 && !HasFailure(); i++) {
     RunOneTest(i * 4711, 20);
     // Test wrap-around scenarios.
     RunOneTest(0x7fffff00ul, 20);
     RunOneTest(0xffffff00ul, 20);
   }
 }
 
 }  // namespace cast
 }  // namespace media