[Payment Request] Refactors PaymentRequestCoordinator.

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

Index: ios/chrome/browser/ui/payments/payment_request_mediator.h
diff --git a/ios/chrome/browser/ui/payments/payment_request_mediator.h b/ios/chrome/browser/ui/payments/payment_request_mediator.h
new file mode 100644
index 0000000000000000000000000000000000000000..7835b29e6bcea979973cb0b496ea6ac6a51ef713
--- /dev/null
+++ b/ios/chrome/browser/ui/payments/payment_request_mediator.h
@@ -0,0 +1,25 @@
+// 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"
+
+namespace ios {
+class ChromeBrowserState;
+}  // namespace ios
+
+// A mediator object that provides data for a PaymentRequestViewController.
+@interface PaymentRequestMediator
+    : NSObject<PaymentRequestViewControllerDataSource>
+
+- (instancetype)initWithBrowserState:(ios::ChromeBrowserState*)browserState
+    NS_DESIGNATED_INITIALIZER;
+
+- (instancetype)init NS_UNAVAILABLE;
+
+@end
+
+#endif  // IOS_CHROME_BROWSER_UI_PAYMENTS_PAYMENT_REQUEST_MEDIATOR_H