The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/97e1b3311477de1bb4084f3267ff1afde6d61fe2

commit 97e1b3311477de1bb4084f3267ff1afde6d61fe2
Author: gogerald <gogerald@google.com>
Date: Tue Nov 21 23:31:10 2017

[Payments] End-to-end test for payment handlers.

Made ServiceWorkerPaymentAppFactory singleton.

Bug:  786116 
Change-Id: I263edd64e7452a81f07011f1a7bda83e8b57c90e
Reviewed-on: https://chromium-review.googlesource.com/774906
Reviewed-by: Rouslan Solomakhin <rouslan@chromium.org>
Commit-Queue: Ganggui Tang <gogerald@chromium.org>
Cr-Commit-Position: refs/heads/master@{#518442}
[modify] https://crrev.com/97e1b3311477de1bb4084f3267ff1afde6d61fe2/chrome/browser/android/payments/service_worker_payment_app_bridge.cc
[modify] https://crrev.com/97e1b3311477de1bb4084f3267ff1afde6d61fe2/chrome/browser/payments/service_worker_payment_app_factory_browsertest.cc
[modify] https://crrev.com/97e1b3311477de1bb4084f3267ff1afde6d61fe2/chrome/browser/ui/views/payments/payment_request_payment_app_browsertest.cc
[modify] https://crrev.com/97e1b3311477de1bb4084f3267ff1afde6d61fe2/components/payments/content/payment_request_state.cc
[modify] https://crrev.com/97e1b3311477de1bb4084f3267ff1afde6d61fe2/components/payments/content/payment_request_state.h
[modify] https://crrev.com/97e1b3311477de1bb4084f3267ff1afde6d61fe2/components/payments/content/service_worker_payment_app_factory.cc
[modify] https://crrev.com/97e1b3311477de1bb4084f3267ff1afde6d61fe2/components/payments/content/service_worker_payment_app_factory.h
[modify] https://crrev.com/97e1b3311477de1bb4084f3267ff1afde6d61fe2/components/payments/content/service_worker_payment_app_factory_unittest.cc