|  | // Copyright 2017 The Chromium Authors | 
|  | // Use of this source code is governed by a BSD-style license that can be | 
|  | // found in the LICENSE file. | 
|  |  | 
|  | #ifndef IOS_CHROME_TEST_SCOPED_KEY_WINDOW_H_ | 
|  | #define IOS_CHROME_TEST_SCOPED_KEY_WINDOW_H_ | 
|  |  | 
|  | #import <UIKit/UIKit.h> | 
|  |  | 
|  | // Sets temporary key window and returns it via Get method. Saves the current | 
|  | // key window and restores it on destruction. | 
|  | class ScopedKeyWindow { | 
|  | public: | 
|  | explicit ScopedKeyWindow(); | 
|  | ~ScopedKeyWindow(); | 
|  | UIWindow* Get(); | 
|  |  | 
|  | private: | 
|  | __strong UIWindow* current_key_window_; | 
|  | __strong UIWindow* original_key_window_; | 
|  | }; | 
|  |  | 
|  | #endif  // IOS_CHROME_TEST_SCOPED_KEY_WINDOW_H_ |