[Web Payments] Add data attribution string to dialog

components/payments/content/payment_request_state.cc

Index: components/payments/content/payment_request_state.cc
diff --git a/components/payments/content/payment_request_state.cc b/components/payments/content/payment_request_state.cc
index dac01e502e008834766e507a7e9e6347f52ff3b6..831449b037245d346a5e448ecca7778e9dd47578 100644
--- a/components/payments/content/payment_request_state.cc
+++ b/components/payments/content/payment_request_state.cc
@@ -88,6 +88,10 @@ bool PaymentRequestState::AreRequestedMethodsSupported() const {
   return !spec_->supported_card_networks().empty();
 }
 
+std::string PaymentRequestState::GetAuthenticatedEmail() const {
+  return payment_request_delegate_->GetAuthenticatedEmail();
+}
+
 void PaymentRequestState::AddObserver(Observer* observer) {
   CHECK(observer);
   observers_.AddObserver(observer);