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

ios/chrome/browser/payments/shipping_address_selection_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.
 
 #import "ios/chrome/browser/payments/shipping_address_selection_view_controller.h"
 
 #include "base/mac/foundation_util.h"
 #include "base/memory/ptr_util.h"
 #include "components/autofill/core/browser/autofill_profile.h"
 #include "components/autofill/core/browser/autofill_test_utils.h"
@@ skipping 16 matching lines @@
     : public CollectionViewControllerTest {
  protected:
   PaymentRequestShippingAddressSelectionViewControllerTest()
       : autofill_profile1_(autofill::test::GetFullProfile()),
         autofill_profile2_(autofill::test::GetFullProfile2()) {
     // Add testing profiles to autofill::TestPersonalDataManager.
     personal_data_manager_.AddTestingProfile(&autofill_profile1_);
     personal_data_manager_.AddTestingProfile(&autofill_profile2_);
   }
 
-  CollectionViewController* NewController() override NS_RETURNS_RETAINED {
+  CollectionViewController* InstantiateController() override {
     payment_request_ = base::MakeUnique<PaymentRequest>(
         payment_request_test_util::CreateTestWebPaymentRequest(),
         &personal_data_manager_);
 
     return [[ShippingAddressSelectionViewController alloc]
         initWithPaymentRequest:payment_request_.get()];
   }
 
   ShippingAddressSelectionViewController*
   GetShippingAddressSelectionViewController() {
@@ skipping 55 matching lines @@
   [GetShippingAddressSelectionViewController() loadModel];
 
   ASSERT_EQ(1, NumberOfSections());
   // There should be only one item.
   ASSERT_EQ(1U, static_cast<unsigned int>(NumberOfItemsInSection(0)));
 
   // The item should be of type StatusItem.
   item = GetCollectionViewItem(0, 0);
   EXPECT_TRUE([item isMemberOfClass:[StatusItem class]]);
 }