replace OVERRIDE and FINAL with override and final in ash/

ash/system/chromeos/multi_user/user_switch_util_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 "ash/shell.h"
 #include "ash/system/chromeos/multi_user/user_switch_util.h"
 #include "ash/system/chromeos/screen_security/screen_tray_item.h"
 #include "ash/system/tray/system_tray.h"
 #include "ash/test/ash_test_base.h"
 
 namespace ash {
 
 class TrySwitchingUserTest : public ash::test::AshTestBase {
  public:
   // The action type to perform / check for upon user switching.
   enum ActionType {
     NO_DIALOG,  // No dialog should be shown.
     ACCEPT_DIALOG,  // A dialog should be shown and we should accept it.
     DECLINE_DIALOG,  // A dialog should be shown and we do not accept it.
   };
   TrySwitchingUserTest()
       : capture_item_(NULL),
         share_item_(NULL),
         stop_capture_callback_hit_count_(0),
         stop_share_callback_hit_count_(0),
         switch_callback_hit_count_(0) {}
   virtual ~TrySwitchingUserTest() {}
 
-  virtual void SetUp() OVERRIDE {
+  virtual void SetUp() override {
     test::AshTestBase::SetUp();
     TrayItemView::DisableAnimationsForTest();
     SystemTray* system_tray =  Shell::GetInstance()->GetPrimarySystemTray();
     share_item_ = system_tray->GetScreenShareItem();
     capture_item_ = system_tray->GetScreenCaptureItem();
     EXPECT_TRUE(share_item_);
     EXPECT_TRUE(capture_item_);
   }
 
   // Accessing the capture session functionality.
@@ skipping 179 matching lines @@
   EXPECT_EQ(1, stop_share_callback_hit_count());
   // Another stop should have no effect.
   StopShareSession();
   StopCaptureSession();
   EXPECT_EQ(1, switch_callback_hit_count());
   EXPECT_EQ(1, stop_capture_callback_hit_count());
   EXPECT_EQ(1, stop_share_callback_hit_count());
 }
 
 }  // namespace ash