[Web Payments] Add data attribution string to dialog

chrome/browser/payments/chrome_payment_request_delegate.h

 // Copyright 2017 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.
 
 #ifndef CHROME_BROWSER_PAYMENTS_CHROME_PAYMENT_REQUEST_DELEGATE_H_
 #define CHROME_BROWSER_PAYMENTS_CHROME_PAYMENT_REQUEST_DELEGATE_H_
 
 #include <memory>
 #include <string>
 
@@ skipping 23 matching lines @@
   bool IsIncognito() const override;
   bool IsSslCertificateValid() override;
   const GURL& GetLastCommittedURL() const override;
   void DoFullCardRequest(
       const autofill::CreditCard& credit_card,
       base::WeakPtr<autofill::payments::FullCardRequest::ResultDelegate>
           result_delegate) override;
   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
   // reference is invalid once CloseDialog() has been called on it, because the
   // dialog will be destroyed. Protected for testing.
   PaymentRequestDialog* dialog_;
 
  private:
   // Not owned but outlives the PaymentRequest object that owns this.
   content::WebContents* web_contents_;
 
   // The address normalizer to use for the duration of the Payment Request.
   AddressNormalizerImpl address_normalizer_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromePaymentRequestDelegate);
 };
 
 }  // namespace payments
 
 #endif  // CHROME_BROWSER_PAYMENTS_CHROME_PAYMENT_REQUEST_DELEGATE_H_