Upstream Chrome on iOS source code [2/11].

ios/chrome/browser/payments/payment_method_selection_view_controller.h

+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef IOS_CHROME_BROWSER_PAYMENTS_PAYMENT_METHOD_SELECTION_VIEW_CONTROLLER_H_
+#define IOS_CHROME_BROWSER_PAYMENTS_PAYMENT_METHOD_SELECTION_VIEW_CONTROLLER_H_
+
+#import <UIKit/UIKit.h>
+
+#import "ios/chrome/browser/ui/collection_view/collection_view_controller.h"
+#include "ios/web/public/payments/payment_request.h"
+
+namespace autofill {
+class CreditCard;
+}
+
+@class PaymentMethodSelectionViewController;
+
+@protocol PaymentMethodSelectionViewControllerDelegate<NSObject>
+
+- (void)paymentMethodSelectionViewController:
+            (PaymentMethodSelectionViewController*)controller
+                       selectedPaymentMethod:
+                           (autofill::CreditCard*)paymentMethod;
+- (void)paymentMethodSelectionViewControllerDidReturn:
+    (PaymentMethodSelectionViewController*)controller;
+
+@end
+
+// View controller responsible for presenting the available payment methods for
+// selection by the user and communicating their choice to the supplied
+// delegate. Also offers a button to add a new payment method.
+@interface PaymentMethodSelectionViewController : CollectionViewController
+
+// The payment methods available to fulfill the payment request.
+@property(nonatomic, assign) std::vector<autofill::CreditCard*> paymentMethods;
+
+// The payment method selected by the user, if any.
+@property(nonatomic, assign) autofill::CreditCard* selectedPaymentMethod;
+
+// The delegate to be notified when the user selects a payment method or chooses
+// to return without selecting one.
+@property(nonatomic, weak) id<PaymentMethodSelectionViewControllerDelegate>
+    delegate;
+
+- (instancetype)init NS_DESIGNATED_INITIALIZER;
+
+- (instancetype)initWithStyle:(CollectionViewControllerStyle)style
+    NS_UNAVAILABLE;
+
+@end
+
+#endif  // IOS_CHROME_BROWSER_PAYMENTS_PAYMENT_METHOD_SELECTION_VIEW_CONTROLLER_H_