Standardize usage of virtual/override/final in chrome/browser/

chrome/browser/autocomplete/keyword_extensions_delegate_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 "chrome/browser/autocomplete/keyword_extensions_delegate_impl.h"
 
 #include "base/memory/ref_counted.h"
 #include "base/path_service.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/extension_service_test_base.h"
 #include "chrome/browser/extensions/extension_util.h"
 #include "chrome/browser/extensions/test_extension_system.h"
 #include "chrome/browser/extensions/unpacked_installer.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/chrome_paths.h"
 #include "components/omnibox/keyword_provider.h"
 #include "components/search_engines/template_url_service.h"
 #include "extensions/browser/extension_registry.h"
 #include "extensions/browser/extension_registry_observer.h"
 #include "extensions/common/extension.h"
 
 namespace extensions {
 
 namespace {
 
 class ScopedExtensionLoadObserver : public ExtensionRegistryObserver {
  public:
   ScopedExtensionLoadObserver(ExtensionRegistry* registry,
                               const base::Closure& quit_closure);
-  virtual ~ScopedExtensionLoadObserver();
+  ~ScopedExtensionLoadObserver() override;
 
  private:
-  virtual void OnExtensionInstalled(content::BrowserContext* browser_context,
-                                    const Extension* extension,
-                                    bool is_update) override;
+  void OnExtensionInstalled(content::BrowserContext* browser_context,
+                            const Extension* extension,
+                            bool is_update) override;
 
   ExtensionRegistry* registry_;
   base::Closure quit_closure_;
 
   DISALLOW_COPY_AND_ASSIGN(ScopedExtensionLoadObserver);
 };
 
 ScopedExtensionLoadObserver::ScopedExtensionLoadObserver(
     ExtensionRegistry* registry,
     const base::Closure& quit_closure)
@@ skipping 88 matching lines @@
   RunTest(false);
 }
 
 TEST_F(KeywordExtensionsDelegateImplTest, IsEnabledExtensionIncognito) {
   RunTest(true);
 }
 
 }  // namespace
 
 }  // namespace extensions