Standardize usage of virtual/override/final in media/

media/base/run_all_unittests.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/bind.h"
 #include "base/command_line.h"
 #include "base/test/launcher/unit_test_launcher.h"
 #include "base/test/test_suite.h"
 #include "build/build_config.h"
 #include "media/base/media.h"
 #include "media/base/media_switches.h"
 
 #if defined(OS_ANDROID)
 #include "base/android/jni_android.h"
 #include "media/base/android/media_jni_registrar.h"
 #include "ui/gl/android/gl_jni_registrar.h"
 #endif
 
 class TestSuiteNoAtExit : public base::TestSuite {
  public:
   TestSuiteNoAtExit(int argc, char** argv) : TestSuite(argc, argv) {}
-  virtual ~TestSuiteNoAtExit() {}
+  ~TestSuiteNoAtExit() override {}
+
  protected:
-  virtual void Initialize() override;
+  void Initialize() override;
 };
 
 void TestSuiteNoAtExit::Initialize() {
   // Run TestSuite::Initialize first so that logging is initialized.
   base::TestSuite::Initialize();
 
   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
   command_line->AppendSwitch(switches::kEnableInbandTextTracks);
 
 #if defined(OS_ANDROID)
   // Register JNI bindings for android.
   JNIEnv* env = base::android::AttachCurrentThread();
   // Needed for surface texture support.
   ui::gl::android::RegisterJni(env);
   media::RegisterJni(env);
 #endif
 
   // Run this here instead of main() to ensure an AtExitManager is already
   // present.
   media::InitializeMediaLibraryForTesting();
 }
 
 int main(int argc, char** argv) {
   TestSuiteNoAtExit test_suite(argc, argv);
 
   return base::LaunchUnitTests(
       argc, argv, base::Bind(&TestSuiteNoAtExit::Run,
                              base::Unretained(&test_suite)));
 }