[Payment Request] Moves PaymentRequest into the payments namespace

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

Index: ios/chrome/browser/ui/payments/credit_card_edit_mediator.mm
diff --git a/ios/chrome/browser/ui/payments/credit_card_edit_mediator.mm b/ios/chrome/browser/ui/payments/credit_card_edit_mediator.mm
index b03947ddd9912a215b1350d3acdcb04363e042bb..6d6c970dc006b4adce3060868130b08e1e7881c3 100644
--- a/ios/chrome/browser/ui/payments/credit_card_edit_mediator.mm
+++ b/ios/chrome/browser/ui/payments/credit_card_edit_mediator.mm
@@ -39,7 +39,7 @@ using ::payment_request_util::GetBillingAddressLabelFromAutofillProfile;
 // 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;
 
 // The credit card to be edited, if any. This pointer is not owned by this class
 // and should outlive it.
@@ -68,7 +68,7 @@ using ::payment_request_util::GetBillingAddressLabelFromAutofillProfile;
 @synthesize fieldsMap = _fieldsMap;
 @synthesize creditCardExpDateField = _creditCardExpDateField;
 
-- (instancetype)initWithPaymentRequest:(PaymentRequest*)paymentRequest
+- (instancetype)initWithPaymentRequest:(payments::PaymentRequest*)paymentRequest
                             creditCard:(autofill::CreditCard*)creditCard {
   self = [super init];
   if (self) {