[Local card migration] Add billing customer number in request

Add billing customer number in the migration request.

TBR=mathp@chromium.org

Bug: 852904
Change-Id: Ia474eda34bc62982e724318f4048ecee6571cc14
Reviewed-on: https://chromium-review.googlesource.com/1198763Reviewed-by: Jared Saul <jsaul@google.com>
Commit-Queue: Sujie Zhu <sujiezhu@google.com>
Cr-Commit-Position: refs/heads/master@{#587931}

components/autofill/core/browser/local_card_migration_manager.cc

@@ -194,6 +194,8 @@ void LocalCardMigrationManager::OnDidGetMigrationRiskData(
 // PaymentsRequest. Also create a new callback function OnDidMigrateLocalCards.
 void LocalCardMigrationManager::SendMigrateLocalCardsRequest() {
   migration_request_.app_locale = app_locale_;
+  migration_request_.billing_customer_number = payments::GetBillingCustomerId(
+      personal_data_manager_, payments_client_->GetPrefService());
   payments_client_->MigrateCards(
       migration_request_, migratable_credit_cards_,
       base::BindOnce(&LocalCardMigrationManager::OnDidMigrateLocalCards,

components/autofill/core/browser/payments/payments_client.cc

@@ -507,6 +507,11 @@ class MigrateCardsRequest : public PaymentsRequest {
     std::unique_ptr<base::DictionaryValue> context(new base::DictionaryValue());
     context->SetString("language_code", app_locale);
     context->SetInteger("billable_service", kMigrateCardsBillableServiceNumber);
+    if (request_details_.billing_customer_number != 0) {
+      context->SetKey("customer_context",
+                      BuildCustomerContextDictionary(
+                          request_details_.billing_customer_number));
+    }
     request_dict.Set("context", std::move(context));
 
     request_dict.SetString("context_token", request_details_.context_token);

components/autofill/core/browser/payments/payments_client.h

@@ -102,6 +102,7 @@ class PaymentsClient {
     MigrationRequestDetails(const MigrationRequestDetails& other);
     ~MigrationRequestDetails();
 
+    int64_t billing_customer_number = 0;
     base::string16 context_token;
     std::string risk_data;
     std::string app_locale;