PaymentRequest: complete() method should take PaymentComplete enum value.

chrome/test/data/android/payments/no_shipping.js

Index: chrome/test/data/android/payments/no_shipping.js
diff --git a/chrome/test/data/android/payments/no_shipping.js b/chrome/test/data/android/payments/no_shipping.js
index 9df7a469ac2d80f007c218dff4a181f4e68db566..060a11b98a6d4445fdb16b52e7b2ff7ba800ad66 100644
--- a/chrome/test/data/android/payments/no_shipping.js
+++ b/chrome/test/data/android/payments/no_shipping.js
@@ -16,7 +16,7 @@ function buy() {  // eslint-disable-line no-unused-vars
         {total: {label: 'Total', amount: {currency: 'USD', value: '5.00'}}})
         .show()
         .then(function(resp) {
-          resp.complete(true)
+          resp.complete("success")
               .then(function() {
                 print(
                     JSON.stringify(resp.totalAmount, undefined, 2) + '<br>' +