[Web Payments] Add data attribution string to dialog

components/payments/core/payment_request_delegate.h

Index: components/payments/core/payment_request_delegate.h
diff --git a/components/payments/core/payment_request_delegate.h b/components/payments/core/payment_request_delegate.h
index f85997984765f75ebc3adc4069e8ccef35dcfe39..a54e88e9deea6794412218e49df30d2b587c442a 100644
--- a/components/payments/core/payment_request_delegate.h
+++ b/components/payments/core/payment_request_delegate.h
@@ -19,6 +19,10 @@ class PersonalDataManager;
 class RegionDataLoader;
 }  // namespace autofill
 
+namespace content {
+class BrowserContext;
+}
+
 namespace ukm {
 class UkmService;
 }  // namespace ukm
@@ -74,6 +78,17 @@ class PaymentRequestDelegate {
 
   // Returns a pointer to the UKM service.
   virtual ukm::UkmService* GetUkmService() = 0;
+
+  // Returns the user's signed-in email address, or empty string if not signed
+  // in.
+  virtual std::string GetAuthenticatedEmail() const = 0;
+
+  // Returns the BrowserContext associated with this PaymentRequest.
+  virtual content::BrowserContext* GetBrowserContext() = 0;
+
+  // Sets the profile pref that represents the first ever transaction being
+  // completed to true.
+  virtual void MarkFirstTransactionAsCompleted() = 0;
 };
 
 }  // namespace payments