[Payment Request] Refactors selector view controllers

ios/chrome/browser/payments/shipping_address_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_SHIPPING_ADDRESS_SELECTION_VIEW_CONTROLLER_H_
-#define IOS_CHROME_BROWSER_PAYMENTS_SHIPPING_ADDRESS_SELECTION_VIEW_CONTROLLER_H_
-
-#import <UIKit/UIKit.h>
-
-#import "ios/chrome/browser/ui/collection_view/collection_view_controller.h"
-
-class PaymentRequest;
-
-namespace autofill {
-class AutofillProfile;
-}  // namespace autofill
-
-@class ShippingAddressSelectionViewController;
-
-// Delegate protocol for ShippingAddressSelectionViewController.
-@protocol ShippingAddressSelectionViewControllerDelegate<NSObject>
-
-// Notifies the delegate that the user has selected a shipping address.
-- (void)shippingAddressSelectionViewController:
-            (ShippingAddressSelectionViewController*)controller
-                      didSelectShippingAddress:
-                          (autofill::AutofillProfile*)shippingAddress;
-
-// Notifies the delegate that the user has chosen to return to the previous
-// screen without making a selection.
-- (void)shippingAddressSelectionViewControllerDidReturn:
-    (ShippingAddressSelectionViewController*)controller;
-
-@end
-
-// View controller responsible for presenting the available shipping addresses
-// for selection by the user and communicating their choice to the supplied
-// delegate. Also offers a button to add a shipping address.
-@interface ShippingAddressSelectionViewController : CollectionViewController
-
-// Whether or not the view is in a pending state.
-@property(nonatomic, assign, getter=isPending) BOOL pending;
-
-// The error message to display, if any.
-@property(nonatomic, copy) NSString* errorMessage;
-
-// The delegate to be notified when the user selects a shipping address or
-// returns without selecting one.
-@property(nonatomic, weak)
-    id<ShippingAddressSelectionViewControllerDelegate> delegate;
-
-// 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
-    NS_DESIGNATED_INITIALIZER;
-
-- (instancetype)init NS_UNAVAILABLE;
-
-- (instancetype)initWithStyle:(CollectionViewControllerStyle)style
-    NS_UNAVAILABLE;
-
-@end
-
-#endif  // IOS_CHROME_BROWSER_PAYMENTS_SHIPPING_ADDRESS_SELECTION_VIEW_CONTROLLER_H_