[Payment Request] Moves PaymentRequest into the payments namespace

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

Index: ios/chrome/browser/ui/payments/billing_address_selection_coordinator.h
diff --git a/ios/chrome/browser/ui/payments/billing_address_selection_coordinator.h b/ios/chrome/browser/ui/payments/billing_address_selection_coordinator.h
index 5238cd3c424efb103c3364baac7ca2cfa8b6816e..4d49fd63728f684896c13e6d7ac17bcef8b54ec7 100644
--- a/ios/chrome/browser/ui/payments/billing_address_selection_coordinator.h
+++ b/ios/chrome/browser/ui/payments/billing_address_selection_coordinator.h
@@ -11,12 +11,14 @@
 #import "ios/chrome/browser/ui/payments/address_edit_coordinator.h"
 #import "ios/chrome/browser/ui/payments/payment_request_selector_view_controller.h"
 
-class PaymentRequest;
-
 namespace autofill {
 class AutofillProfile;
 }  // namespace autofill
 
+namespace payments {
+class PaymentRequest;
+}  // namespace payments
+
 @class BillingAddressSelectionCoordinator;
 
 // Delegate protocol for BillingAddressSelectionCoordinator.
@@ -48,7 +50,7 @@ class AutofillProfile;
 // The PaymentRequest object having a copy 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 selects a billing address or
 // returns without selecting one.