Standardize usage of virtual/override/final specifiers.

ash/test/ash_test_base.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 "ash/test/ash_test_base.h"
 
 #include <string>
 #include <vector>
 
 #include "ash/ash_switches.h"
@@ skipping 41 matching lines @@
 #endif
 
 namespace ash {
 namespace test {
 namespace {
 
 class AshEventGeneratorDelegate
     : public aura::test::EventGeneratorDelegateAura {
  public:
   AshEventGeneratorDelegate() {}
-  virtual ~AshEventGeneratorDelegate() {}
+  ~AshEventGeneratorDelegate() override {}
 
   // aura::test::EventGeneratorDelegateAura overrides:
-  virtual aura::WindowTreeHost* GetHostAt(
+  aura::WindowTreeHost* GetHostAt(
       const gfx::Point& point_in_screen) const override {
     gfx::Screen* screen = Shell::GetScreen();
     gfx::Display display = screen->GetDisplayNearestPoint(point_in_screen);
     return Shell::GetInstance()->display_controller()->
         GetRootWindowForDisplayId(display.id())->GetHost();
   }
 
-  virtual aura::client::ScreenPositionClient* GetScreenPositionClient(
+  aura::client::ScreenPositionClient* GetScreenPositionClient(
       const aura::Window* window) const override {
     return aura::client::GetScreenPositionClient(window->GetRootWindow());
   }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(AshEventGeneratorDelegate);
 };
 
 }  // namespace
 
@@ skipping 247 matching lines @@
 
 void AshTestBase::UnblockUserSession() {
   Shell::GetInstance()->session_state_delegate()->UnlockScreen();
   SetSessionStarted(true);
   SetUserAddingScreenRunning(false);
 }
 
 
 }  // namespace test
 }  // namespace ash