The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/5c2a1482498ef9594bfcb8b4a307964d93b48a8a

commit 5c2a1482498ef9594bfcb8b4a307964d93b48a8a
Author: Jared Saul <jsaul@google.com>
Date: Sat Dec 09 00:24:31 2017

Send first six digits of PAN in GetUploadDetails request

Bug:  793490 
Change-Id: I109a09fbbab979afa769bfae161dd5f3d7809007
Reviewed-on: https://chromium-review.googlesource.com/816084
Commit-Queue: Jared Saul <jsaul@google.com>
Reviewed-by: Mathieu Perreault <mathp@chromium.org>
Cr-Commit-Position: refs/heads/master@{#522933}
[modify] https://crrev.com/5c2a1482498ef9594bfcb8b4a307964d93b48a8a/chrome/browser/about_flags.cc
[modify] https://crrev.com/5c2a1482498ef9594bfcb8b4a307964d93b48a8a/chrome/browser/flag_descriptions.cc
[modify] https://crrev.com/5c2a1482498ef9594bfcb8b4a307964d93b48a8a/chrome/browser/flag_descriptions.h
[modify] https://crrev.com/5c2a1482498ef9594bfcb8b4a307964d93b48a8a/components/autofill/core/browser/autofill_experiments.cc
[modify] https://crrev.com/5c2a1482498ef9594bfcb8b4a307964d93b48a8a/components/autofill/core/browser/autofill_experiments.h
[modify] https://crrev.com/5c2a1482498ef9594bfcb8b4a307964d93b48a8a/components/autofill/core/browser/credit_card_save_manager.cc
[modify] https://crrev.com/5c2a1482498ef9594bfcb8b4a307964d93b48a8a/components/autofill/core/browser/credit_card_save_manager_unittest.cc
[modify] https://crrev.com/5c2a1482498ef9594bfcb8b4a307964d93b48a8a/components/autofill/core/browser/payments/payments_client.cc
[modify] https://crrev.com/5c2a1482498ef9594bfcb8b4a307964d93b48a8a/components/autofill/core/browser/payments/payments_client.h
[modify] https://crrev.com/5c2a1482498ef9594bfcb8b4a307964d93b48a8a/components/autofill/core/browser/payments/payments_client_unittest.cc
[modify] https://crrev.com/5c2a1482498ef9594bfcb8b4a307964d93b48a8a/tools/metrics/histograms/enums.xml

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/db75f306dd6169bcc32227373ba8b4c14ee5b64e

commit db75f306dd6169bcc32227373ba8b4c14ee5b64e
Author: Jared Saul <jsaul@google.com>
Date: Thu Dec 14 23:54:01 2017

Update waterfall testing config for new Chrome Upstream launches

Make the following changes:

* Remove AutofillUpstreamShowGoogleLogo and AutofillUpstreamShowNewUi.  The code has been updated to make those default.
* Add Mac to AutofillUpstreamRequestCvcIfMissing in preparation of the M64 launch.
* Add config for AutofillUpstreamSendDetectedValues and AutofillUpstreamSendPanFirstSix, part of the Upstream Partial Data Project targeting M65.

Bug:  736944 ,  789645 ,  793490 
Change-Id: If6888d203dbceb3dcba8d38184244375c9cb110a
Reviewed-on: https://chromium-review.googlesource.com/827631
Reviewed-by: Mark Pearson <mpearson@chromium.org>
Commit-Queue: Jared Saul <jsaul@google.com>
Cr-Commit-Position: refs/heads/master@{#524234}
[modify] https://crrev.com/db75f306dd6169bcc32227373ba8b4c14ee5b64e/testing/variations/fieldtrial_testing_config.json

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/80577497b14d353352df68cffe093ae5e1a138a7

commit 80577497b14d353352df68cffe093ae5e1a138a7
Author: Jared Saul <jsaul@google.com>
Date: Fri Jan 05 18:59:31 2018

Remove AutofillUpstreamSendPanFirstSix from waterfall testing config

Bug:  793490 
Change-Id: I1d4bc796dc3d30105f621adb01857d0c127c3873
Reviewed-on: https://chromium-review.googlesource.com/851252
Reviewed-by: Robert Kaplow <rkaplow@chromium.org>
Commit-Queue: Jared Saul <jsaul@google.com>
Cr-Commit-Position: refs/heads/master@{#527337}
[modify] https://crrev.com/80577497b14d353352df68cffe093ae5e1a138a7/testing/variations/fieldtrial_testing_config.json

Hey Jared, what's the status of this? :)

Should probably transform this into a cleanup bug if we are not launching

Good question.  The Payments team still wants this as it will provide a much better Upstream experience, but I know there was some pushback.  Let me start a quick thread on this to see where we stand.  Definitely happy to clean it up if it looks like we won't be using it.

Abandoning project; cleanup bug is crbug.com/876893.