[Payment Request] Moves PaymentRequest into the payments namespace

ios/chrome/browser/ui/payments/credit_card_edit_coordinator.h

Index: ios/chrome/browser/ui/payments/credit_card_edit_coordinator.h
diff --git a/ios/chrome/browser/ui/payments/credit_card_edit_coordinator.h b/ios/chrome/browser/ui/payments/credit_card_edit_coordinator.h
index 5a374386f7645fe237228ac7869421d6c2d63968..a499ad9de7fdc361230c52a7a4f1142523bdeeb6 100644
--- a/ios/chrome/browser/ui/payments/credit_card_edit_coordinator.h
+++ b/ios/chrome/browser/ui/payments/credit_card_edit_coordinator.h
@@ -14,7 +14,9 @@ namespace payments {
 class AutofillPaymentInstrument;
 }
 
+namespace payments {
 class PaymentRequest;
+}  // namespace payments
 
 @class CreditCardEditCoordinator;
 
@@ -52,7 +54,7 @@ class PaymentRequest;
 // The PaymentRequest object owning an instance of web::PaymentRequest as
 // provided by the page invoking the Payment Request API. This pointer is not
 // owned by this class and should outlive it.
-@property(nonatomic, assign) PaymentRequest* paymentRequest;
+@property(nonatomic, assign) payments::PaymentRequest* paymentRequest;
 
 // The delegate to be notified when the user returns or finishes creating or
 // editing a credit card.