[Payments] Implement payment instrument icons

content/public/browser/stored_payment_instrument.h

Index: content/public/browser/stored_payment_instrument.h
diff --git a/content/public/browser/stored_payment_instrument.h b/content/public/browser/stored_payment_instrument.h
index 858e2c5067881bd10921910b5faaa4cab33a8642..5c0f64d97418019d6d1692ac3c40d714f872aeef 100644
--- a/content/public/browser/stored_payment_instrument.h
+++ b/content/public/browser/stored_payment_instrument.h
@@ -10,6 +10,7 @@
 #include <vector>
 
 #include "content/common/content_export.h"
+#include "third_party/skia/include/core/SkBitmap.h"
 #include "url/gurl.h"
 
 namespace content {
@@ -32,6 +33,9 @@ struct CONTENT_EXPORT StoredPaymentInstrument {
   // Label for this payment instrument.
   std::string name;
 
+  // Decoded icon for this payment instrument.
+  std::unique_ptr<SkBitmap> icon;
+
   // A list of one or more payment method identifiers of the payment methods
   // supported by this payment instrument.
   std::vector<std::string> enabled_methods;