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

components/payments/payment_request.cc

 // 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.
 
 #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"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/web_contents.h"
 
 namespace payments {
 
 PaymentRequest::PaymentRequest(
     content::WebContents* web_contents,
@@ skipping 37 matching lines @@
 
 void PaymentRequest::Cancel() {
   client_->OnError(payments::mojom::PaymentErrorReason::USER_CANCEL);
 }
 
 void PaymentRequest::OnError() {
   binding_.Close();
   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