Standardize usage of virtual/override/final in extensions/

extensions/browser/api/api_resource_manager_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 "base/files/file_path.h"
 #include "base/strings/string_util.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/test/test_browser_thread_bundle.h"
 #include "extensions/browser/api/api_resource.h"
 #include "extensions/browser/api/api_resource_manager.h"
@@ skipping 15 matching lines @@
 
  private:
   content::TestBrowserThreadBundle thread_bundle_;
   scoped_ptr<NotificationService> notification_service_;
 };
 
 class FakeApiResource : public ApiResource {
  public:
   explicit FakeApiResource(const std::string& owner_extension_id)
       : ApiResource(owner_extension_id) {}
-  virtual ~FakeApiResource() {}
+  ~FakeApiResource() override {}
   static const BrowserThread::ID kThreadId = BrowserThread::UI;
 };
 
 TEST_F(ApiResourceManagerUnitTest, TwoAppsCannotShareResources) {
   scoped_ptr<ApiResourceManager<FakeApiResource> > manager(
       new ApiResourceManager<FakeApiResource>(NULL));
   scoped_refptr<extensions::Extension> extension_one =
       test_util::CreateEmptyExtension("one");
   scoped_refptr<extensions::Extension> extension_two =
       test_util::CreateEmptyExtension("two");
@@ skipping 12 matching lines @@
 
   // Confirm neither extension can get the other's resource.
   ASSERT_TRUE(manager->Get(extension_one_id, resource_two_id) == NULL);
   ASSERT_TRUE(manager->Get(extension_two_id, resource_one_id) == NULL);
 
   // And make sure we're not susceptible to any Jedi mind tricks.
   ASSERT_TRUE(manager->Get(std::string(), resource_one_id) == NULL);
 }
 
 }  // namespace extensions