Import Objective C Frameworks

ios/public/provider/chrome/browser/signin/test_signin_resources_provider.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/public/provider/chrome/browser/signin/test_signin_resources_provider.h"
 
-#include <UIKit/UIKit.h>
+#import <UIKit/UIKit.h>
 
 TestSigninResourcesProvider::TestSigninResourcesProvider()
     : default_avatar_([[UIImage alloc] init]) {}
 
 TestSigninResourcesProvider::~TestSigninResourcesProvider() {}
 
 UIImage* TestSigninResourcesProvider::GetDefaultAvatar() {
   return default_avatar_;
 }
 
 NSString* TestSigninResourcesProvider::GetLocalizedString(
     ios::SigninStringID string_id) {
   return @"Test";
 }