The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/64ec3fbc585aefb3cb0b6acfb825aa97043de2ad

commit 64ec3fbc585aefb3cb0b6acfb825aa97043de2ad
Author: Rouslan Solomakhin <rouslan@chromium.org>
Date: Thu Nov 16 00:45:27 2017

[Payments] More detailed error messages for payment handler install.

Tested on:
https://rsolomakhin.github.io/pr/apps/no-manifest/
https://rsolomakhin.github.io/pr/apps/404-manifest/
https://rsolomakhin.github.io/pr/apps/no-icon/
https://rsolomakhin.github.io/pr/apps/404-icon/
https://rsolomakhin.github.io/pr/apps/no-name/

Bug:  785301 
Change-Id: I5a425982262c520cd04d7afcbf69795764c4351c
Reviewed-on: https://chromium-review.googlesource.com/773041
Commit-Queue: Rouslan Solomakhin <rouslan@chromium.org>
Reviewed-by: Ganggui Tang <gogerald@chromium.org>
Cr-Commit-Position: refs/heads/master@{#516922}
[modify] https://crrev.com/64ec3fbc585aefb3cb0b6acfb825aa97043de2ad/content/browser/payments/payment_app_info_fetcher.cc
[modify] https://crrev.com/64ec3fbc585aefb3cb0b6acfb825aa97043de2ad/content/browser/payments/payment_app_info_fetcher.h
[modify] https://crrev.com/64ec3fbc585aefb3cb0b6acfb825aa97043de2ad/third_party/WebKit/Source/modules/payments/PaymentInstruments.cpp