[Payment Request] Moves PaymentRequest into the payments namespace

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

Index: ios/chrome/browser/ui/payments/contact_info_selection_mediator.h
diff --git a/ios/chrome/browser/ui/payments/contact_info_selection_mediator.h b/ios/chrome/browser/ui/payments/contact_info_selection_mediator.h
index 9577b802be53deb18ae79917f8d90acaf89005b1..3d6ea32ffb1f0da6aaccf040778bdad4a8883af9 100644
--- a/ios/chrome/browser/ui/payments/contact_info_selection_mediator.h
+++ b/ios/chrome/browser/ui/payments/contact_info_selection_mediator.h
@@ -7,7 +7,9 @@
 
 #import "ios/chrome/browser/ui/payments/payment_request_selector_view_controller_data_source.h"
 
+namespace payments {
 class PaymentRequest;
+}  // namespace payments
 
 // Serves as data source for PaymentRequestSelectorViewController.
 @interface ContactInfoSelectionMediator
@@ -25,7 +27,7 @@ class PaymentRequest;
 // Initializes this object with an instance of PaymentRequest which has a copy
 // of web::PaymentRequest as provided by the page invoking the Payment Request
 // API. This object will not take ownership of |paymentRequest|.
-- (instancetype)initWithPaymentRequest:(PaymentRequest*)paymentRequest
+- (instancetype)initWithPaymentRequest:(payments::PaymentRequest*)paymentRequest
     NS_DESIGNATED_INITIALIZER;
 
 - (instancetype)init NS_UNAVAILABLE;