Revert of Remove uses of FontList::Derive*(..) in views payments dialogs.

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 ef9cadf10682634e1a6b0a9d404e67807a2cb3b0..8c9232100c3d849f0d91403fef3fada4a56e7457 100644
--- a/chrome/browser/ui/views/payments/payment_request_views_util.h
+++ b/chrome/browser/ui/views/payments/payment_request_views_util.h
@@ -125,11 +125,6 @@
 // Creates a label with a bold font.
 std::unique_ptr<views::Label> CreateBoldLabel(const base::string16& text);
 
-// Creates a label with a medium-weight font, with appropriate fallbacks for
-// platforms that have no medium font, or where a user has configured their
-// default font with a heavier weight.
-std::unique_ptr<views::Label> CreateMediumLabel(const base::string16& text);
-
 // Creates a 2 line label containing |shipping_option|'s label and amount. If
 // |emphasize_label| is true, the label part will be in medium weight.
 std::unique_ptr<views::View> CreateShippingOptionLabel(