Standardize usage of virtual/override/final specifiers.

media/cast/sender/video_encoder_impl_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 <vector>
 
 #include "base/bind.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "media/base/video_frame.h"
@@ skipping 69 matching lines @@
  protected:
   VideoEncoderImplTest() {
     video_config_ = GetDefaultVideoSenderConfig();
     video_config_.codec = CODEC_VIDEO_VP8;
     gfx::Size size(video_config_.width, video_config_.height);
     video_frame_ = media::VideoFrame::CreateFrame(
         VideoFrame::I420, size, gfx::Rect(size), size, base::TimeDelta());
     PopulateVideoFrame(video_frame_.get(), 123);
   }
 
-  virtual ~VideoEncoderImplTest() {}
+  ~VideoEncoderImplTest() override {}
 
-  virtual void SetUp() override {
+  void SetUp() override {
     testing_clock_ = new base::SimpleTestTickClock();
     testing_clock_->Advance(base::TimeTicks::Now() - base::TimeTicks());
     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 void TearDown() override {
+  void TearDown() override {
     video_encoder_.reset();
     task_runner_->RunTasks();
   }
 
   void CreateEncoder() {
     test_video_encoder_callback_ = new TestVideoEncoderCallback(
         video_config_.max_number_of_video_buffers_used != 1);
     video_encoder_.reset(
         new VideoEncoderImpl(cast_environment_, video_config_));
   }
@@ skipping 94 matching lines @@
     EXPECT_TRUE(video_encoder_->EncodeVideoFrame(
         video_frame_, testing_clock_->NowTicks(), frame_encoded_callback));
     task_runner_->RunTasks();
   }
 
   EXPECT_EQ(10, test_video_encoder_callback_->count_frames_delivered());
 }
 
 }  // namespace cast
 }  // namespace media