[Payments] Add the "Cards accepted" row at the top of CC editor.

chrome/browser/ui/views/payments/payment_request_views_util.h

Index: chrome/browser/ui/views/payments/payment_request_views_util.h
diff --git a/chrome/browser/ui/views/payments/payment_request_views_util.h b/chrome/browser/ui/views/payments/payment_request_views_util.h
index 56220237fdd5687482e67027a05a6f2899f53bf8..1b498910d068ad2b5d15bfa0d6fc55e21480d8ce 100644
--- a/chrome/browser/ui/views/payments/payment_request_views_util.h
+++ b/chrome/browser/ui/views/payments/payment_request_views_util.h
@@ -16,6 +16,7 @@ class AutofillProfile;
 
 namespace views {
 class Border;
+class ImageView;
 class VectorIconButtonDelegate;
 class View;
 }
@@ -46,6 +47,11 @@ std::unique_ptr<views::View> CreateSheetHeaderView(
     const base::string16& title,
     views::VectorIconButtonDelegate* delegate);
 
+// Returns a card image view for the given |card_type|. Includes a rounded rect
+// border. Callers need to set the size of the resulting ImageView.
+std::unique_ptr<views::ImageView> CreateCardIconView(
+    const std::string& card_type);
+
 // Represents formatting options for each of the different contexts in which an
 // Address label may be displayed.
 enum class AddressStyleType { SUMMARY, DETAILED };