The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/8a93b2794165aa76a669ad2adc0690a45b4fd679

commit 8a93b2794165aa76a669ad2adc0690a45b4fd679
Author: sebsg <sebsg@chromium.org>
Date: Thu May 11 19:30:22 2017

[Payments] Record use stats after payment request completion.

BUG= 720605 

Review-Url: https://codereview.chromium.org/2874873002
Cr-Commit-Position: refs/heads/master@{#471042}

[add] https://crrev.com/8a93b2794165aa76a669ad2adc0690a45b4fd679/chrome/browser/ui/views/payments/payment_request_use_stats_browsertest.cc
[modify] https://crrev.com/8a93b2794165aa76a669ad2adc0690a45b4fd679/chrome/test/BUILD.gn
[modify] https://crrev.com/8a93b2794165aa76a669ad2adc0690a45b4fd679/components/payments/content/payment_request.cc
[modify] https://crrev.com/8a93b2794165aa76a669ad2adc0690a45b4fd679/components/payments/content/payment_request_state.cc
[modify] https://crrev.com/8a93b2794165aa76a669ad2adc0690a45b4fd679/components/payments/content/payment_request_state.h
[modify] https://crrev.com/8a93b2794165aa76a669ad2adc0690a45b4fd679/components/payments/core/autofill_payment_instrument.cc
[modify] https://crrev.com/8a93b2794165aa76a669ad2adc0690a45b4fd679/components/payments/core/autofill_payment_instrument.h
[modify] https://crrev.com/8a93b2794165aa76a669ad2adc0690a45b4fd679/components/payments/core/payment_instrument.h