Move string helper functions to components/core for iOS use.

chrome/browser/ui/views/payments/payment_request_views_util.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 CHROME_BROWSER_UI_VIEWS_PAYMENTS_PAYMENT_REQUEST_VIEWS_UTIL_H_
 #define CHROME_BROWSER_UI_VIEWS_PAYMENTS_PAYMENT_REQUEST_VIEWS_UTIL_H_
 
 #include <memory>
 #include <string>
 
@@ skipping 80 matching lines @@
     const autofill::AutofillProfile& profile,
     const PaymentOptionsProvider& options);
 
 // Creates a views::Border object that can paint the gray horizontal ruler used
 // as a separator between items in the Payment Request dialog.
 std::unique_ptr<views::Border> CreatePaymentRequestRowBorder();
 
 // Creates a label with a bold font.
 std::unique_ptr<views::Label> CreateBoldLabel(const base::string16& text);
 
-base::string16 GetShippingAddressSectionString(
-    PaymentShippingType shipping_type);
-base::string16 GetShippingOptionSectionString(
-    PaymentShippingType shipping_type);
-
 std::unique_ptr<views::View> CreateShippingOptionLabel(
     payments::mojom::PaymentShippingOption* shipping_option,
     const base::string16& formatted_amount);
 
 }  // namespace payments
 
 #endif  // CHROME_BROWSER_UI_VIEWS_PAYMENTS_PAYMENT_REQUEST_VIEWS_UTIL_H_