Verify behavior of PaymentRequest constructor.

third_party/WebKit/LayoutTests/payments/payment-request-interface.html

Index: third_party/WebKit/LayoutTests/payments/payment-request-interface.html
diff --git a/third_party/WebKit/LayoutTests/payments/payment-request-interface.html b/third_party/WebKit/LayoutTests/payments/payment-request-interface.html
index a0b338f680b5a0b6b085b7648ab80de32b15d22e..303e895e521933eddf7bb74eebf563e128e91ce4 100644
--- a/third_party/WebKit/LayoutTests/payments/payment-request-interface.html
+++ b/third_party/WebKit/LayoutTests/payments/payment-request-interface.html
@@ -313,9 +313,6 @@ generate_tests(assert_throws, [
     ['Absence of supportedMethods in modifiers should throw TypeError.', null, function() {
         new PaymentRequest([{'supportedMethods': ['foo']}], {'total': buildItem(), 'modifiers': [{'total': buildItem()}]})
     }],
-    ['Empty modifiers should throw TypeError.', null, function() {
-        new PaymentRequest([{'supportedMethods': ['foo']}], {'total': buildItem(), 'modifiers': []})
-    }],
     ['Empty details should throw', null, function() {
         new PaymentRequest([{'supportedMethods': ['foo']}], {})
     }],