[Payment Request] Selector view edit mode

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

Index: ios/chrome/browser/ui/payments/payment_method_selection_mediator.h
diff --git a/ios/chrome/browser/ui/payments/payment_method_selection_mediator.h b/ios/chrome/browser/ui/payments/payment_method_selection_mediator.h
index 6eb9a32b75399fb62319719cd720a1e46d0568cf..359f0d2d6d81870bb4440fcb31e84d227a7b3746 100644
--- a/ios/chrome/browser/ui/payments/payment_method_selection_mediator.h
+++ b/ios/chrome/browser/ui/payments/payment_method_selection_mediator.h
@@ -13,9 +13,15 @@ class PaymentRequest;
 @interface PaymentMethodSelectionMediator
     : NSObject<PaymentRequestSelectorViewControllerDataSource>
 
-// Index for the currently selected item or NSUIntegerMax if there is none.
+// Redefined to be read-write.
+@property(nonatomic, readwrite, assign) PaymentRequestSelectorState state;
+
+// Redefined to be read-write.
 @property(nonatomic, readwrite, assign) NSUInteger selectedItemIndex;
 
+// Creates and stores the selectable items to display in the collection.
+- (void)loadItems;
+
 // 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|.