Standardize usage of virtual/override/final specifiers.

ash/test/ash_test_base.h

 // 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.
 
 #ifndef ASH_TEST_ASH_TEST_BASE_H_
 #define ASH_TEST_ASH_TEST_BASE_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
@@ skipping 32 matching lines @@
 class AshTestHelper;
 class TestScreenshotDelegate;
 class TestSystemTrayDelegate;
 #if defined(OS_WIN)
 class TestMetroViewerProcessHost;
 #endif
 
 class AshTestBase : public testing::Test {
  public:
   AshTestBase();
-  virtual ~AshTestBase();
+  ~AshTestBase() override;
 
   // testing::Test:
-  virtual void SetUp() override;
-  virtual void TearDown() override;
+  void SetUp() override;
+  void TearDown() override;
 
   // Update the display configuration as given in |display_specs|.
   // See ash::test::DisplayManagerTestApi::UpdateDisplay for more details.
   void UpdateDisplay(const std::string& display_specs);
 
   // Returns a root Window. Usually this is the active root Window, but that
   // method can return NULL sometimes, and in those cases, we fall back on the
   // primary root Window.
   aura::Window* CurrentContext();
 
@@ skipping 76 matching lines @@
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(AshTestBase);
 };
 
 class NoSessionAshTestBase : public AshTestBase {
  public:
   NoSessionAshTestBase() {
     set_start_session(false);
   }
-  virtual ~NoSessionAshTestBase() {}
+  ~NoSessionAshTestBase() override {}
 
  private:
   DISALLOW_COPY_AND_ASSIGN(NoSessionAshTestBase);
 };
 
 }  // namespace test
 }  // namespace ash
 
 #endif  // ASH_TEST_ASH_TEST_BASE_H_