[Payment Request] Moves PaymentRequest into the payments namespace

ios/chrome/browser/ui/payments/payment_items_display_mediator.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 <UIKit/UIKit.h>
 #include <vector>
 
 #import "ios/chrome/browser/ui/payments/payment_items_display_mediator.h"
 
 #include "base/strings/sys_string_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "components/payments/core/currency_formatter.h"
 #include "components/strings/grit/components_strings.h"
 #include "ios/chrome/browser/payments/payment_request.h"
 #import "ios/chrome/browser/ui/payments/cells/price_item.h"
 #include "ui/base/l10n/l10n_util.h"
 
 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."
 #endif
 
 @interface PaymentItemsDisplayMediator ()
 
 // The PaymentRequest object owning an instance of web::PaymentRequest as
 // provided by the page invoking the Payment Request API. This is a weak
 // pointer and should outlive this class.
-@property(nonatomic, assign) PaymentRequest* paymentRequest;
+@property(nonatomic, assign) payments::PaymentRequest* paymentRequest;
 
 @end
 
 @implementation PaymentItemsDisplayMediator
 
 @synthesize paymentRequest = _paymentRequest;
 
-- (instancetype)initWithPaymentRequest:(PaymentRequest*)paymentRequest {
+- (instancetype)initWithPaymentRequest:
+    (payments::PaymentRequest*)paymentRequest {
   self = [super init];
   if (self) {
     _paymentRequest = paymentRequest;
   }
   return self;
 }
 
 #pragma mark - PaymentItemsDisplayViewControllerDataSource
 
 - (CollectionViewItem*)totalItem {
@@ skipping 23 matching lines @@
         _paymentRequest->GetOrCreateCurrencyFormatter();
     item.price = SysUTF16ToNSString(currencyFormatter->Format(
         base::UTF16ToASCII(paymentItem.amount.value)));
 
     [lineItems addObject:item];
   }
   return lineItems;
 }
 
 @end