Standardize usage of virtual/override/final in gin/

gin/modules/module_runner_delegate.h

 // Copyright 2013 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.
 
 #ifndef GIN_MODULES_MODULE_RUNNER_DELEGATE_H_
 #define GIN_MODULES_MODULE_RUNNER_DELEGATE_H_
 
 #include <map>
 
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "gin/gin_export.h"
 #include "gin/modules/file_module_provider.h"
 #include "gin/shell_runner.h"
 #include "v8/include/v8.h"
 
 namespace gin {
 
 typedef v8::Local<v8::Value> (*ModuleGetter)(v8::Isolate* isolate);
 typedef base::Callback<v8::Local<v8::Value>(v8::Isolate*)> ModuleGetterCallback;
 
 // Emebedders that use AMD modules will probably want to use a RunnerDelegate
 // that inherits from ModuleRunnerDelegate. ModuleRunnerDelegate lets embedders
 // register built-in modules and routes module requests to FileModuleProvider.
 class GIN_EXPORT ModuleRunnerDelegate : public ShellRunnerDelegate {
  public:
   explicit ModuleRunnerDelegate(
       const std::vector<base::FilePath>& search_paths);
-  virtual ~ModuleRunnerDelegate();
+  ~ModuleRunnerDelegate() override;
 
   void AddBuiltinModule(const std::string& id, ModuleGetter getter);
   void AddBuiltinModule(const std::string& id,
                         const ModuleGetterCallback& getter);
 
  protected:
   void AttemptToLoadMoreModules(Runner* runner);
 
  private:
   typedef std::map<std::string, ModuleGetterCallback> BuiltinModuleMap;
 
   // From ShellRunnerDelegate:
-  virtual v8::Handle<v8::ObjectTemplate> GetGlobalTemplate(
+  v8::Handle<v8::ObjectTemplate> GetGlobalTemplate(
       ShellRunner* runner,
       v8::Isolate* isolate) override;
-  virtual void DidCreateContext(ShellRunner* runner) override;
-  virtual void DidRunScript(ShellRunner* runner) override;
+  void DidCreateContext(ShellRunner* runner) override;
+  void DidRunScript(ShellRunner* runner) override;
 
   BuiltinModuleMap builtin_modules_;
   FileModuleProvider module_provider_;
 
   DISALLOW_COPY_AND_ASSIGN(ModuleRunnerDelegate);
 };
 
 }  // namespace gin
 
 #endif  // GIN_MODULES_MODULE_RUNNER_DELEGATE_H_