[Web Payments] Add data attribution string to dialog

chrome/browser/payments/chrome_payment_request_delegate.h

Index: chrome/browser/payments/chrome_payment_request_delegate.h
diff --git a/chrome/browser/payments/chrome_payment_request_delegate.h b/chrome/browser/payments/chrome_payment_request_delegate.h
index b93a417889f407304f099d26144c4912f26fefb2..0fb6afa0a04c48e7f2ee2e1dd0d0d66993e7b63c 100644
--- a/chrome/browser/payments/chrome_payment_request_delegate.h
+++ b/chrome/browser/payments/chrome_payment_request_delegate.h
@@ -41,6 +41,9 @@ class ChromePaymentRequestDelegate : public PaymentRequestDelegate {
   AddressNormalizer* GetAddressNormalizer() override;
   autofill::RegionDataLoader* GetRegionDataLoader() override;
   ukm::UkmService* GetUkmService() override;
+  std::string GetAuthenticatedEmail() const override;
+  content::BrowserContext* GetBrowserContext() override;
+  void MarkFirstTransactionAsCompleted() override;
 
  protected:
   // Reference to the dialog so that we can satisfy calls to CloseDialog(). This