Adding testcase for interacting with PaymentRequest in wrong PaymentRequest
state. Calling RespondPayment(), ChangeShippingOption() and
ChangeShippingAddress() in wrong state should return error. This test case
verifying the behavior when calling these methods when PaymentRequest state
is eClosed and after PaymentResponse::complete() called.
--HG--
extra : histedit_source : 3e70e64ac739dd7d8cbc4627dbdbd64462ae4211