Import Objective C Frameworks

ios/chrome/browser/ui/main/main_view_controller_unittest.mm

 // Copyright 2016 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 "ios/chrome/browser/ui/main/main_view_controller.h"
 
-#include <UIKit/UIKit.h>
+#import <UIKit/UIKit.h>
 
 #include "base/mac/scoped_nsobject.h"
 #include "testing/gtest_mac.h"
 
 @interface HiddenStatusBarViewController : UIViewController
 @end
 
 @implementation HiddenStatusBarViewController
 - (BOOL)prefersStatusBarHidden {
   return YES;
@@ skipping 120 matching lines @@
       setActiveViewController:status_bar_hidden_view_controller];
   EXPECT_EQ([main_view_controller childViewControllerForStatusBarHidden],
             status_bar_hidden_view_controller.get());
   EXPECT_TRUE(CGRectEqualToRect(
       [UIApplication sharedApplication].statusBarFrame, CGRectZero));
   [[UIApplication sharedApplication] keyWindow].rootViewController =
       root_view_controller;
 }
 
 }  // namespace