The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/bc03a52bf7070a0ad33eb1099098ae59fadadf13

commit bc03a52bf7070a0ad33eb1099098ae59fadadf13
Author: gogerald <gogerald@google.com>
Date: Tue Sep 05 02:31:42 2017

[Payments] Add userHint for web payment handler

Related spec:
https://github.com/w3c/payment-handler/pull/206/files

Bug:  760148 
Change-Id: I3e38c8b77379db00fbd4d6ef3b1340105d4da06f
Reviewed-on: https://chromium-review.googlesource.com/642363
Reviewed-by: Robert Sesek <rsesek@chromium.org>
Reviewed-by: Pavel Feldman <pfeldman@chromium.org>
Reviewed-by: Rouslan Solomakhin <rouslan@chromium.org>
Commit-Queue: Ganggui Tang <gogerald@chromium.org>
Cr-Commit-Position: refs/heads/master@{#499542}
[modify] https://crrev.com/bc03a52bf7070a0ad33eb1099098ae59fadadf13/chrome/android/java/src/org/chromium/chrome/browser/payments/PaymentInstrument.java
[modify] https://crrev.com/bc03a52bf7070a0ad33eb1099098ae59fadadf13/chrome/android/java/src/org/chromium/chrome/browser/payments/ServiceWorkerPaymentApp.java
[modify] https://crrev.com/bc03a52bf7070a0ad33eb1099098ae59fadadf13/chrome/android/java/src/org/chromium/chrome/browser/payments/ServiceWorkerPaymentAppBridge.java
[modify] https://crrev.com/bc03a52bf7070a0ad33eb1099098ae59fadadf13/chrome/android/javatests/src/org/chromium/chrome/browser/payments/PaymentRequestServiceWorkerPaymentAppTest.java
[modify] https://crrev.com/bc03a52bf7070a0ad33eb1099098ae59fadadf13/chrome/browser/android/payments/service_worker_payment_app_bridge.cc
[modify] https://crrev.com/bc03a52bf7070a0ad33eb1099098ae59fadadf13/content/browser/payments/payment_app.proto
[modify] https://crrev.com/bc03a52bf7070a0ad33eb1099098ae59fadadf13/content/browser/payments/payment_app_database.cc
[modify] https://crrev.com/bc03a52bf7070a0ad33eb1099098ae59fadadf13/content/browser/payments/payment_app_database.h
[modify] https://crrev.com/bc03a52bf7070a0ad33eb1099098ae59fadadf13/content/browser/payments/payment_manager.cc
[modify] https://crrev.com/bc03a52bf7070a0ad33eb1099098ae59fadadf13/content/browser/payments/payment_manager.h
[modify] https://crrev.com/bc03a52bf7070a0ad33eb1099098ae59fadadf13/content/public/browser/stored_payment_app.h
[modify] https://crrev.com/bc03a52bf7070a0ad33eb1099098ae59fadadf13/third_party/WebKit/LayoutTests/webexposed/global-interface-listing-expected.txt
[modify] https://crrev.com/bc03a52bf7070a0ad33eb1099098ae59fadadf13/third_party/WebKit/Source/modules/payments/PaymentManager.cpp
[modify] https://crrev.com/bc03a52bf7070a0ad33eb1099098ae59fadadf13/third_party/WebKit/Source/modules/payments/PaymentManager.h
[modify] https://crrev.com/bc03a52bf7070a0ad33eb1099098ae59fadadf13/third_party/WebKit/Source/modules/payments/PaymentManager.idl
[modify] https://crrev.com/bc03a52bf7070a0ad33eb1099098ae59fadadf13/third_party/WebKit/public/platform/modules/payments/payment_app.mojom