Standardize usage of virtual/override/final in content/

content/child/npapi/plugin_lib_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 "content/child/npapi/plugin_lib.h"
 
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "build/build_config.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace content {
 
 // Test the unloading of plugin libs. Bug http://crbug.com/46526 showed that
 // if UnloadAllPlugins() simply iterates through the g_loaded_libs global
 // variable, we can get a crash if no plugin libs were marked as always loaded.
 class PluginLibTest : public PluginLib {
  public:
   PluginLibTest() : PluginLib(WebPluginInfo()) {}
   using PluginLib::Unload;
 
  protected:
-  virtual ~PluginLibTest() {}
+  ~PluginLibTest() override {}
 };
 
 TEST(PluginLibLoading, UnloadAllPlugins) {
   // For the creation of the g_loaded_libs global variable.
   ASSERT_EQ(static_cast<PluginLibTest*>(NULL),
       PluginLibTest::CreatePluginLib(base::FilePath()));
 
   // Try with a single plugin lib.
   scoped_refptr<PluginLibTest> plugin_lib1(new PluginLibTest());
   PluginLib::UnloadAllPlugins();
@@ skipping 21 matching lines @@
   ASSERT_EQ(static_cast<PluginLibTest*>(NULL),
       PluginLibTest::CreatePluginLib(base::FilePath()));
 
   // Now try to manually Unload the only one and then UnloadAll.
   plugin_lib1 = new PluginLibTest();
   plugin_lib1->Unload();
   PluginLib::UnloadAllPlugins();
 }
 
 }  // namespace content