[Payment Request] Moves PaymentRequestViewController to :payments_ui

ios/chrome/browser/ui/payments/payment_request_mediator.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_UI_PAYMENTS_PAYMENT_REQUEST_MEDIATOR_H_
 #define IOS_CHROME_BROWSER_UI_PAYMENTS_PAYMENT_REQUEST_MEDIATOR_H_
 
-#include "ios/chrome/browser/ui/payments/payment_request_view_controller.h"
+#import "ios/chrome/browser/ui/payments/payment_request_view_controller_data_source.h"
 
 namespace ios {
 class ChromeBrowserState;
 }  // namespace ios
 
+class PaymentRequest;
+
 // A mediator object that provides data for a PaymentRequestViewController.
 @interface PaymentRequestMediator
     : NSObject<PaymentRequestViewControllerDataSource>
 
+// Whether or not the total price value was changed by the merchant.
+@property(nonatomic, assign) BOOL totalValueChanged;
+
+// Initializes this object with an instance of ios::ChromeBrowserState and 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 |browserState| or |paymentRequest|.
 - (instancetype)initWithBrowserState:(ios::ChromeBrowserState*)browserState
+                      paymentRequest:(PaymentRequest*)paymentRequest
     NS_DESIGNATED_INITIALIZER;
 
 - (instancetype)init NS_UNAVAILABLE;
 
 @end
 
 #endif  // IOS_CHROME_BROWSER_UI_PAYMENTS_PAYMENT_REQUEST_MEDIATOR_H