[Payment Request] Moves PaymentRequest into the payments namespace

ios/chrome/browser/ui/payments/payment_request_mediator_unittest.mm

 // Copyright 2017 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/payments/payment_request_mediator.h"
 
 #import <Foundation/Foundation.h>
 
 #include "base/mac/foundation_util.h"
 #include "base/memory/ptr_util.h"
@@ skipping 48 matching lines @@
     // Add testing profile and credit card to autofill::TestPersonalDataManager.
     personal_data_manager_.AddTestingProfile(&autofill_profile_);
     credit_card_.set_billing_address_id(autofill_profile_.guid());
     personal_data_manager_.AddTestingCreditCard(&credit_card_);
 
     TestChromeBrowserState::Builder test_cbs_builder;
     test_cbs_builder.AddTestingFactory(ios::SigninManagerFactory::GetInstance(),
                                        &ios::BuildFakeSigninManager);
     chrome_browser_state_ = test_cbs_builder.Build();
 
-    payment_request_ = base::MakeUnique<TestPaymentRequest>(
+    payment_request_ = base::MakeUnique<payments::TestPaymentRequest>(
         payment_request_test_util::CreateTestWebPaymentRequest(),
         chrome_browser_state_.get(), &personal_data_manager_);
     payment_request_->SetPrefService(pref_service_.get());
 
     mediator_ = [[PaymentRequestMediator alloc]
         initWithPaymentRequest:payment_request_.get()];
   }
 
   PaymentRequestMediator* GetPaymentRequestMediator() { return mediator_; }
 
   base::test::ScopedTaskEnvironment scoped_task_evironment_;
 
   autofill::AutofillProfile autofill_profile_;
   autofill::CreditCard credit_card_;
   std::unique_ptr<PrefService> pref_service_;
   autofill::TestPersonalDataManager personal_data_manager_;
-  std::unique_ptr<TestPaymentRequest> payment_request_;
+  std::unique_ptr<payments::TestPaymentRequest> payment_request_;
   std::unique_ptr<TestChromeBrowserState> chrome_browser_state_;
   PaymentRequestMediator* mediator_;
 };
 
 // Tests whether payment can be completed when expected.
 TEST_F(PaymentRequestMediatorTest, TestCanPay) {
   EXPECT_TRUE(payment_request_->selected_payment_method());
   EXPECT_TRUE(payment_request_->selected_shipping_profile());
   EXPECT_TRUE(payment_request_->selected_shipping_option());
   EXPECT_TRUE(payment_request_->selected_contact_profile());
@@ skipping 377 matching lines @@
   signin_manager->SignOut(signin_metrics::SIGNOUT_TEST,
                           signin_metrics::SignoutDelete::IGNORE_METRIC);
 
   // The signed in state has no effect on the footer text if the first
   // transaction has completed.
   footer_item = base::mac::ObjCCastStrict<CollectionViewFooterItem>(item);
   EXPECT_TRUE([footer_item.text
       isEqualToString:l10n_util::GetNSString(
                           IDS_PAYMENTS_CARD_AND_ADDRESS_SETTINGS)]);
 }