Standardize usage of virtual/override/final specifiers.

ash/test/test_shelf_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 ASH_TEST_TEST_SHELF_DELEGATE_H_
 #define ASH_TEST_TEST_SHELF_DELEGATE_H_
 
 #include <map>
 #include <set>
 
 #include "ash/shelf/shelf_delegate.h"
 #include "base/compiler_specific.h"
 #include "ui/aura/window_observer.h"
 
 namespace ash {
 
 class ShelfModel;
 
 namespace test {
 
 // Test implementation of ShelfDelegate.
 // Tests may create icons for windows by calling AddShelfItem().
 class TestShelfDelegate : public ShelfDelegate, public aura::WindowObserver {
  public:
   explicit TestShelfDelegate(ShelfModel* model);
-  virtual ~TestShelfDelegate();
+  ~TestShelfDelegate() override;
 
   void AddShelfItem(aura::Window* window);
   void AddShelfItem(aura::Window* window, ShelfItemStatus status);
   void RemoveShelfItemForWindow(aura::Window* window);
 
   static TestShelfDelegate* instance() { return instance_; }
 
   // WindowObserver implementation
-  virtual void OnWindowDestroying(aura::Window* window) override;
-  virtual void OnWindowHierarchyChanging(
-      const HierarchyChangeParams& params) override;
+  void OnWindowDestroying(aura::Window* window) override;
+  void OnWindowHierarchyChanging(const HierarchyChangeParams& params) override;
 
   // ShelfDelegate implementation.
-  virtual void OnShelfCreated(Shelf* shelf) override;
-  virtual void OnShelfDestroyed(Shelf* shelf) override;
-  virtual ShelfID GetShelfIDForAppID(const std::string& app_id) override;
-  virtual const std::string& GetAppIDForShelfID(ShelfID id) override;
-  virtual void PinAppWithID(const std::string& app_id) override;
-  virtual bool CanPin() const override;
-  virtual bool IsAppPinned(const std::string& app_id) override;
-  virtual void UnpinAppWithID(const std::string& app_id) override;
+  void OnShelfCreated(Shelf* shelf) override;
+  void OnShelfDestroyed(Shelf* shelf) override;
+  ShelfID GetShelfIDForAppID(const std::string& app_id) override;
+  const std::string& GetAppIDForShelfID(ShelfID id) override;
+  void PinAppWithID(const std::string& app_id) override;
+  bool CanPin() const override;
+  bool IsAppPinned(const std::string& app_id) override;
+  void UnpinAppWithID(const std::string& app_id) override;
 
  private:
   static TestShelfDelegate* instance_;
 
   ShelfModel* model_;
 
   DISALLOW_COPY_AND_ASSIGN(TestShelfDelegate);
 };
 
 }  // namespace test
 }  // namespace ash
 
 #endif  // ASH_TEST_TEST_SHELF_DELEGATE_H_