Standardize usage of virtual/override/final specifiers.

media/base/audio_bus_unittest.cc

 // Copyright (c) 2012 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/strings/stringprintf.h"
 #include "base/time/time.h"
 #include "build/build_config.h"
 #include "media/audio/audio_parameters.h"
 #include "media/base/audio_bus.h"
 #include "media/base/channel_layout.h"
 #include "media/base/fake_audio_render_callback.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace media {
 
 static const int kChannels = 6;
 static const ChannelLayout kChannelLayout = CHANNEL_LAYOUT_5_1;
 // Use a buffer size which is intentionally not a multiple of kChannelAlignment.
 static const int kFrameCount = media::AudioBus::kChannelAlignment * 32 - 1;
 static const int kSampleRate = 48000;
 
 class AudioBusTest : public testing::Test {
  public:
   AudioBusTest() {}
-  virtual ~AudioBusTest() {
+  ~AudioBusTest() override {
     for (size_t i = 0; i < data_.size(); ++i)
       base::AlignedFree(data_[i]);
   }
 
   // Validate parameters returned by AudioBus v.s. the constructed parameters.
   void VerifyParams(AudioBus* bus) {
     EXPECT_EQ(kChannels, bus->channels());
     EXPECT_EQ(kFrameCount, bus->frames());
   }
 
@@ skipping 371 matching lines @@
 
   // Verify zero volume case.
   bus->Scale(0);
   for (int i = 0; i < bus->channels(); ++i) {
     SCOPED_TRACE("Zero Scale");
     VerifyValue(bus->channel(i), bus->frames(), 0);
   }
 }
 
 }  // namespace media