[WebPayments] Add the Payment Method section in the Payment Sheet

components/payments/payment_request.cc

Index: components/payments/payment_request.cc
diff --git a/components/payments/payment_request.cc b/components/payments/payment_request.cc
index 98182c155672e0a96ae518de2a66c1702ffb3226..f78d83f0a8ae0e2038b8c027f9bda4c87c8d322b 100644
--- a/components/payments/payment_request.cc
+++ b/components/payments/payment_request.cc
@@ -4,6 +4,7 @@
 
 #include "components/payments/payment_request.h"
 
+#include "components/autofill/core/browser/personal_data_manager.h"
 #include "components/payments/payment_details_validation.h"
 #include "components/payments/payment_request_delegate.h"
 #include "components/payments/payment_request_web_contents_manager.h"
@@ -61,4 +62,23 @@ void PaymentRequest::OnError() {
   manager_->DestroyRequest(this);
 }
 
+autofill::CreditCard* PaymentRequest::GetCurrentlySelectedCreditCard() {
+  // TODO(anthonyvd): Change this code to prioritize server cards and implement
+  // a way to modify this function's return value.
+  autofill::PersonalDataManager* data_manager =
+      delegate_->GetDataManagerFromWebContents(web_contents());
+
+  const std::vector<autofill::CreditCard*> cards =
+      data_manager->GetCreditCardsToSuggest();
+
+  auto first_complete_card = std::find_if(
+      cards.begin(),
+      cards.end(),
+      [] (autofill::CreditCard* card) {
+        return card->IsValid();
+  });
+
+  return first_complete_card == cards.end() ? nullptr : *first_complete_card;
+}
+
 }  // namespace payments