[ObjC ARC] Converts ios/chrome/browser/payments:unit_tests to ARC.

ios/chrome/browser/payments/payment_items_display_coordinator_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.
 
 #import "ios/chrome/browser/payments/payment_items_display_coordinator.h"
 
 #include "base/mac/foundation_util.h"
 #include "base/test/ios/wait_util.h"
 #include "components/autofill/core/browser/autofill_profile.h"
 #include "components/autofill/core/browser/credit_card.h"
 #include "components/autofill/core/browser/test_personal_data_manager.h"
 #import "ios/chrome/browser/payments/payment_items_display_view_controller.h"
 #include "ios/chrome/browser/payments/payment_request.h"
 #include "ios/chrome/browser/payments/payment_request_test_util.h"
 #include "ios/web/public/payments/payment_request.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/platform_test.h"
 #include "third_party/ocmock/OCMock/OCMock.h"
 #include "third_party/ocmock/gtest_support.h"
 
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
 typedef PlatformTest PaymentItemsDisplayCoordinatorTest;
 
 // Tests that invoking start and stop on the coordinator presents and dismisses
 // the payment items display view controller, respectively.
 TEST(PaymentItemsDisplayCoordinatorTest, StartAndStop) {
   std::unique_ptr<PaymentRequest> payment_request =
       payment_request_test_util::CreateTestPaymentRequest();
 
-  UIViewController* base_view_controller =
-      [[[UIViewController alloc] init] autorelease];
+  UIViewController* base_view_controller = [[UIViewController alloc] init];
   UINavigationController* navigation_controller =
-      [[[UINavigationController alloc]
-          initWithRootViewController:base_view_controller] autorelease];
+      [[UINavigationController alloc]
+          initWithRootViewController:base_view_controller];
 
   PaymentItemsDisplayCoordinator* coordinator =
-      [[[PaymentItemsDisplayCoordinator alloc]
-          initWithBaseViewController:base_view_controller] autorelease];
+      [[PaymentItemsDisplayCoordinator alloc]
+          initWithBaseViewController:base_view_controller];
   [coordinator setPaymentRequest:payment_request.get()];
 
   EXPECT_EQ(1u, navigation_controller.viewControllers.count);
 
   [coordinator start];
   // Short delay to allow animation to complete.
   base::test::ios::SpinRunLoopWithMaxDelay(base::TimeDelta::FromSecondsD(1.0));
   EXPECT_EQ(2u, navigation_controller.viewControllers.count);
 
   [coordinator stop];
   // Short delay to allow animation to complete.
   base::test::ios::SpinRunLoopWithMaxDelay(base::TimeDelta::FromSecondsD(1.0));
   EXPECT_EQ(1u, navigation_controller.viewControllers.count);
 }
 
 // Tests that calling the view controller delegate method which notifies the
 // coordinator that the user has confirmed the payment request invokes the
 // the corresponding coordinator delegate method.
 TEST(PaymentItemsDisplayCoordinatorTest, DidConfirm) {
   std::unique_ptr<PaymentRequest> payment_request =
       payment_request_test_util::CreateTestPaymentRequest();
 
-  UIViewController* base_view_controller =
-      [[[UIViewController alloc] init] autorelease];
+  UIViewController* base_view_controller = [[UIViewController alloc] init];
   UINavigationController* navigation_controller =
-      [[[UINavigationController alloc]
-          initWithRootViewController:base_view_controller] autorelease];
+      [[UINavigationController alloc]
+          initWithRootViewController:base_view_controller];
 
   PaymentItemsDisplayCoordinator* coordinator =
-      [[[PaymentItemsDisplayCoordinator alloc]
-          initWithBaseViewController:base_view_controller] autorelease];
+      [[PaymentItemsDisplayCoordinator alloc]
+          initWithBaseViewController:base_view_controller];
   [coordinator setPaymentRequest:payment_request.get()];
 
   // Mock the coordinator delegate.
   id delegate = [OCMockObject
       mockForProtocol:@protocol(PaymentItemsDisplayCoordinatorDelegate)];
   [[delegate expect] paymentItemsDisplayCoordinatorDidConfirm:coordinator];
   [coordinator setDelegate:delegate];
 
   EXPECT_EQ(1u, navigation_controller.viewControllers.count);
 
@@ skipping 11 matching lines @@
   EXPECT_OCMOCK_VERIFY(delegate);
 }
 
 // Tests that calling the view controller delegate method which notifies the
 // coordinator that the user has chosen to return to the previous screen invokes
 // the corresponding coordinator delegate method.
 TEST(PaymentItemsDisplayCoordinatorTest, DidReturn) {
   std::unique_ptr<PaymentRequest> payment_request =
       payment_request_test_util::CreateTestPaymentRequest();
 
-  UIViewController* base_view_controller =
-      [[[UIViewController alloc] init] autorelease];
+  UIViewController* base_view_controller = [[UIViewController alloc] init];
   UINavigationController* navigation_controller =
-      [[[UINavigationController alloc]
-          initWithRootViewController:base_view_controller] autorelease];
+      [[UINavigationController alloc]
+          initWithRootViewController:base_view_controller];
 
   PaymentItemsDisplayCoordinator* coordinator =
-      [[[PaymentItemsDisplayCoordinator alloc]
-          initWithBaseViewController:base_view_controller] autorelease];
+      [[PaymentItemsDisplayCoordinator alloc]
+          initWithBaseViewController:base_view_controller];
   [coordinator setPaymentRequest:payment_request.get()];
 
   // Mock the coordinator delegate.
   id delegate = [OCMockObject
       mockForProtocol:@protocol(PaymentItemsDisplayCoordinatorDelegate)];
   [[delegate expect] paymentItemsDisplayCoordinatorDidReturn:coordinator];
   [coordinator setDelegate:delegate];
 
   EXPECT_EQ(1u, navigation_controller.viewControllers.count);
 
   [coordinator start];
   // Short delay to allow animation to complete.
   base::test::ios::SpinRunLoopWithMaxDelay(base::TimeDelta::FromSecondsD(1.0));
   EXPECT_EQ(2u, navigation_controller.viewControllers.count);
 
   // Call the controller delegate method.
   PaymentItemsDisplayViewController* view_controller =
       base::mac::ObjCCastStrict<PaymentItemsDisplayViewController>(
           navigation_controller.visibleViewController);
   [coordinator paymentItemsDisplayViewControllerDidReturn:view_controller];
 
   EXPECT_OCMOCK_VERIFY(delegate);
 }