[ObjC ARC] Converts ios/chrome/browser/ui/alert_coordinator:unit_tests to ARC.Automatically gener…

ios/chrome/browser/ui/alert_coordinator/input_alert_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/ui/alert_coordinator/input_alert_coordinator.h"
 
 #include "testing/platform_test.h"
 #import "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
+
 TEST(InputAlertCoordinatorTest, AddTextField) {
   // Setup.
-  UIViewController* viewController =
-      [[[UIViewController alloc] init] autorelease];
-  InputAlertCoordinator* alertCoordinator = [[[InputAlertCoordinator alloc]
-      initWithBaseViewController:viewController
-                           title:@"Test"
-                         message:nil] autorelease];
+  UIViewController* viewController = [[UIViewController alloc] init];
+  InputAlertCoordinator* alertCoordinator =
+      [[InputAlertCoordinator alloc] initWithBaseViewController:viewController
+                                                          title:@"Test"
+                                                        message:nil];
 
   void (^emptyHandler)(UITextField* textField) = ^(UITextField* textField) {
   };
   id alert =
       [OCMockObject partialMockForObject:alertCoordinator.alertController];
   [[alert expect] addTextFieldWithConfigurationHandler:emptyHandler];
 
   // Action.
   [alertCoordinator addTextFieldWithConfigurationHandler:emptyHandler];
 
   // Test.
   EXPECT_OCMOCK_VERIFY(alert);
 }
 
 TEST(InputAlertCoordinatorTest, GetTextFields) {
   // Setup.
-  UIViewController* viewController =
-      [[[UIViewController alloc] init] autorelease];
-  InputAlertCoordinator* alertCoordinator = [[[InputAlertCoordinator alloc]
-      initWithBaseViewController:viewController
-                           title:@"Test"
-                         message:nil] autorelease];
+  UIViewController* viewController = [[UIViewController alloc] init];
+  InputAlertCoordinator* alertCoordinator =
+      [[InputAlertCoordinator alloc] initWithBaseViewController:viewController
+                                                          title:@"Test"
+                                                        message:nil];
 
   NSArray<UITextField*>* array = [NSArray array];
   id alert =
       [OCMockObject partialMockForObject:alertCoordinator.alertController];
   [[[alert expect] andReturn:array] textFields];
 
   // Action.
   NSArray<UITextField*>* resultArray = alertCoordinator.textFields;
 
   // Test.
   EXPECT_EQ(array, resultArray);
   EXPECT_OCMOCK_VERIFY(alert);
 }