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

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

Index: chrome/test/data/android/payments/dynamic_shipping.js
diff --git a/chrome/test/data/android/payments/dynamic_shipping.js b/chrome/test/data/android/payments/dynamic_shipping.js
index 736c73ea6e423fd259438c5cd20388b7ea8d955a..e2daa0f56201b6371ccf1ad74c4ea6a0bc2a05d0 100644
--- a/chrome/test/data/android/payments/dynamic_shipping.js
+++ b/chrome/test/data/android/payments/dynamic_shipping.js
@@ -30,7 +30,7 @@ function buy() {  // eslint-disable-line no-unused-vars
 
     request.show()
         .then(function(resp) {
-          resp.complete(true)
+          resp.complete("success")
               .then(function() {
                 print(request.shippingOption + '<br>' +
                     JSON.stringify(