The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/8081c02908534b12968e52de312c2b7ca7b19456

commit 8081c02908534b12968e52de312c2b7ca7b19456
Author: sebsg <sebsg@chromium.org>
Date: Tue Oct 25 02:17:38 2016

[Payments] Normalize billing address before sending to the merchant.

BUG= 654773 

Review-Url: https://codereview.chromium.org/2413533003
Cr-Commit-Position: refs/heads/master@{#427242}

[modify] https://crrev.com/8081c02908534b12968e52de312c2b7ca7b19456/chrome/android/java/src/org/chromium/chrome/browser/autofill/PersonalDataManager.java
[modify] https://crrev.com/8081c02908534b12968e52de312c2b7ca7b19456/chrome/android/java/src/org/chromium/chrome/browser/payments/AutofillPaymentInstrument.java
[modify] https://crrev.com/8081c02908534b12968e52de312c2b7ca7b19456/chrome/android/java/src/org/chromium/chrome/browser/payments/PaymentInstrument.java
[modify] https://crrev.com/8081c02908534b12968e52de312c2b7ca7b19456/chrome/android/java/src/org/chromium/chrome/browser/payments/PaymentRequestImpl.java
[add] https://crrev.com/8081c02908534b12968e52de312c2b7ca7b19456/chrome/android/java/src/org/chromium/chrome/browser/payments/PaymentResponseHelper.java
[modify] https://crrev.com/8081c02908534b12968e52de312c2b7ca7b19456/chrome/android/java_sources.gni
[modify] https://crrev.com/8081c02908534b12968e52de312c2b7ca7b19456/chrome/android/javatests/src/org/chromium/chrome/browser/payments/PaymentRequestUseStatsTest.java
[modify] https://crrev.com/8081c02908534b12968e52de312c2b7ca7b19456/chrome/browser/autofill/android/personal_data_manager_android.cc
[modify] https://crrev.com/8081c02908534b12968e52de312c2b7ca7b19456/chrome/browser/autofill/android/personal_data_manager_android.h
[modify] https://crrev.com/8081c02908534b12968e52de312c2b7ca7b19456/components/autofill/core/browser/payments/full_card_request.cc

Steps to reproduce:
1) Add an address with "California" state through Autofill settings.
2) Add card "4111 1111 1111 1111" with that address as billing address in Autofill settings.
3) Pay using this card on https://googlechrome.github.io/samples/paymentrequest/credit-cards/

Expected:
The "billingAddress"/"region" should be "CA", not "California". (This happens because the address is normalized on the fly when user clicks [PAY].)

Thanks for providing verification steps.

Verified in - M56-56.0.2906.0