Standardize usage of virtual/override/final specifiers.

media/cast/receiver/frame_receiver_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 <utility>
 
 #include "base/bind.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 59 matching lines @@
     start_time_ = testing_clock_->NowTicks();
     task_runner_ = new test::FakeSingleThreadTaskRunner(testing_clock_);
 
     cast_environment_ =
         new CastEnvironment(scoped_ptr<base::TickClock>(testing_clock_).Pass(),
                             task_runner_,
                             task_runner_,
                             task_runner_);
   }
 
-  virtual ~FrameReceiverTest() {}
+  ~FrameReceiverTest() override {}
 
-  virtual void SetUp() {
+  void SetUp() override {
     payload_.assign(kPacketSize, 0);
 
     // Always start with a key frame.
     rtp_header_.is_key_frame = true;
     rtp_header_.frame_id = kFirstFrameId;
     rtp_header_.packet_id = 0;
     rtp_header_.max_packet_id = 0;
     rtp_header_.reference_frame_id = rtp_header_.frame_id;
     rtp_header_.rtp_timestamp = 0;
   }
@@ skipping 317 matching lines @@
     EXPECT_GE(kFirstFrameId + 3, frame_events[i].frame_id);
     const int frame_offset = frame_events[i].frame_id - kFirstFrameId;
     EXPECT_EQ(frame_offset * rtp_advance_per_frame,
               frame_events[i].rtp_timestamp);
   }
   cast_environment_->Logging()->RemoveRawEventSubscriber(&event_subscriber);
 }
 
 }  // namespace cast
 }  // namespace media