Selected shipping option in payment summary view + shipping option selection view

ios/chrome/browser/payments/shipping_option_selection_coordinator.h

+// Copyright 2017 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_SHIPPING_OPTION_SELECTION_COORDINATOR_H_
+#define IOS_CHROME_BROWSER_PAYMENTS_SHIPPING_OPTION_SELECTION_COORDINATOR_H_
+
+#import <UIKit/UIKit.h>
+#include <vector>
+
+#import "ios/chrome/browser/chrome_coordinator.h"
+#include "ios/web/public/payments/payment_request.h"
+
+@class ShippingOptionSelectionCoordinator;
+
+@protocol ShippingOptionSelectionCoordinatorDelegate<NSObject>
+
+// Notifies the delegate that the user has selected a shipping option.
+- (void)shippingOptionSelectionCoordinator:
+            (ShippingOptionSelectionCoordinator*)coordinator
+                    selectedShippingOption:
+                        (web::PaymentShippingOption*)shippingOption;
+
+// Notifies the delegate that the user has chosen to return to the previous
+// screen without making a selection.
+- (void)shippingOptionSelectionCoordinatorDidReturn:
+    (ShippingOptionSelectionCoordinator*)coordinator;
+
+@end
+
+// Coordinator responsible for creating and presenting the shipping option
+// selection view controller. This view controller will be presented by the view
+// controller provided in the initializer.
+@interface ShippingOptionSelectionCoordinator : ChromeCoordinator
+
+// The available shipping options to fulfill the payment request.
+@property(nonatomic, assign) std::vector<web::PaymentShippingOption*>
+    shippingOptions;
+
+// The shipping option selected by the user, if any.
+@property(nonatomic, assign) web::PaymentShippingOption* selectedShippingOption;
+
+// The delegate to be notified when the user selects a shipping option or
+// returns without selecting one.
+@property(nonatomic, weak) id<ShippingOptionSelectionCoordinatorDelegate>
+    delegate;
+
+@end
+
+#endif  // IOS_CHROME_BROWSER_PAYMENTS_SHIPPING_OPTION_SELECTION_COORDINATOR_H_