The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/ce175bf8f65f37c028b55b0ff87492773881b0b5

commit ce175bf8f65f37c028b55b0ff87492773881b0b5
Author: Danyao Wang <danyao@chromium.org>
Date: Fri Dec 21 22:35:58 2018

[Payment Request] Add HasEnrolledInstrument to Payment Request API.

This is the first step to change Chrome's PaymentRequest implementation
to match the proposed spec change:
https://lists.w3.org/Archives/Public/public-payments-wg/2018Nov/0018.html

This CL aligns mojom::PaymentRequest API with the new spec proposal by
renaming CanMakePayment to HasEnrolledInstrument and leaving a stub for
CanMakePayment. Blink's canMakePayemnt is switched to using
HasEnrolledInstrument so there is no behavior change visible to the web
platform.

There will be a few subsequent changes:
- Implement new CanMakePayment behavior
- Expose hasEnrolledInstrument and new canMakePayment in Blink behind
  a runtime flag.

Bug: 915907
Change-Id: I137110de0077fb4e243b883d27c82109f8d2afbb
Reviewed-on: https://chromium-review.googlesource.com/c/1383445
Reviewed-by: Chris Palmer <palmer@chromium.org>
Reviewed-by: Rouslan Solomakhin <rouslan@chromium.org>
Commit-Queue: Danyao Wang <danyao@chromium.org>
Cr-Commit-Position: refs/heads/master@{#618639}
[modify] https://crrev.com/ce175bf8f65f37c028b55b0ff87492773881b0b5/chrome/android/java/src/org/chromium/chrome/browser/payments/PaymentRequestFactory.java
[modify] https://crrev.com/ce175bf8f65f37c028b55b0ff87492773881b0b5/chrome/android/java/src/org/chromium/chrome/browser/payments/PaymentRequestImpl.java
[modify] https://crrev.com/ce175bf8f65f37c028b55b0ff87492773881b0b5/chrome/android/javatests/src/org/chromium/chrome/browser/payments/PaymentRequestTestRule.java
[modify] https://crrev.com/ce175bf8f65f37c028b55b0ff87492773881b0b5/chrome/browser/ui/views/payments/payment_request_browsertest_base.cc
[modify] https://crrev.com/ce175bf8f65f37c028b55b0ff87492773881b0b5/chrome/browser/ui/views/payments/payment_request_browsertest_base.h
[modify] https://crrev.com/ce175bf8f65f37c028b55b0ff87492773881b0b5/components/payments/content/payment_request.cc
[modify] https://crrev.com/ce175bf8f65f37c028b55b0ff87492773881b0b5/components/payments/content/payment_request.h
[modify] https://crrev.com/ce175bf8f65f37c028b55b0ff87492773881b0b5/components/payments/content/payment_request_state.cc
[modify] https://crrev.com/ce175bf8f65f37c028b55b0ff87492773881b0b5/components/payments/content/payment_request_state.h
[modify] https://crrev.com/ce175bf8f65f37c028b55b0ff87492773881b0b5/components/payments/content/payment_request_state_unittest.cc
[modify] https://crrev.com/ce175bf8f65f37c028b55b0ff87492773881b0b5/components/payments_strings.grdp
[modify] https://crrev.com/ce175bf8f65f37c028b55b0ff87492773881b0b5/third_party/blink/public/mojom/payments/payment_request.mojom
[modify] https://crrev.com/ce175bf8f65f37c028b55b0ff87492773881b0b5/third_party/blink/renderer/modules/payments/can_make_payment_test.cc
[modify] https://crrev.com/ce175bf8f65f37c028b55b0ff87492773881b0b5/third_party/blink/renderer/modules/payments/payment_request.cc
[modify] https://crrev.com/ce175bf8f65f37c028b55b0ff87492773881b0b5/third_party/blink/renderer/modules/payments/payment_request.h

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/4bc0606a30b63bb7e0b14f8c01e0fce1cf45eb37

commit 4bc0606a30b63bb7e0b14f8c01e0fce1cf45eb37
Author: Danyao Wang <danyao@chromium.org>
Date: Thu Dec 27 16:54:53 2018

[Payment Request] Align CanMakePayment semantic to new spec proposal.

This CL implements the CanMakePayment stub in mojom::PaymentRequest API
according to the new spec proposal:
https://lists.w3.org/Archives/Public/public-payments-wg/2018Nov/0018.html

This new CanMakePayment returns true as long as support for the merchant-
specified payment method is available. In contrast, the old version also
required the payment app for the payment method also be properly
provisioned (e.g. having a card or payment handler installed) before.
returning true. The old behavior is now provided via
HasEnrolledInstrument.

This CL also removed query quota for CanMakePayment because the new
implementation no longer exposes details about user's setting that can
be used for fingerprinting.

This new CanMakePayment API will be exposed in Blink in a subsequent CL.

Bug: 915907
Change-Id: Id92aafb65fd8fc05ab49ef7e2affd71dd1903388
Reviewed-on: https://chromium-review.googlesource.com/c/1387025
Commit-Queue: Danyao Wang <danyao@chromium.org>
Reviewed-by: Chris Palmer <palmer@chromium.org>
Reviewed-by: Rouslan Solomakhin <rouslan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#619047}
[modify] https://crrev.com/4bc0606a30b63bb7e0b14f8c01e0fce1cf45eb37/chrome/android/java/src/org/chromium/chrome/browser/payments/PaymentRequestImpl.java
[modify] https://crrev.com/4bc0606a30b63bb7e0b14f8c01e0fce1cf45eb37/components/payments/content/payment_request.cc
[modify] https://crrev.com/4bc0606a30b63bb7e0b14f8c01e0fce1cf45eb37/components/payments/content/payment_request.h
[modify] https://crrev.com/4bc0606a30b63bb7e0b14f8c01e0fce1cf45eb37/components/payments/content/payment_request_state.cc
[modify] https://crrev.com/4bc0606a30b63bb7e0b14f8c01e0fce1cf45eb37/components/payments/content/payment_request_state.h
[modify] https://crrev.com/4bc0606a30b63bb7e0b14f8c01e0fce1cf45eb37/components/payments/content/payment_request_state_unittest.cc
[modify] https://crrev.com/4bc0606a30b63bb7e0b14f8c01e0fce1cf45eb37/third_party/blink/public/mojom/payments/payment_request.mojom

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/ffe65028319b24fe413809cdf6048d7936e252c3

commit ffe65028319b24fe413809cdf6048d7936e252c3
Author: Danyao Wang <danyao@chromium.org>
Date: Thu Dec 27 18:25:56 2018

[Payment Request] Add hasEnrolledInstrument behind runtime flag in Blink

Bug: 915907
Change-Id: I7d8c46b92201ca62c222ca2a932f72f441ae4da5
Reviewed-on: https://chromium-review.googlesource.com/c/1388814
Reviewed-by: Jeremy Roman <jbroman@chromium.org>
Reviewed-by: Rouslan Solomakhin <rouslan@chromium.org>
Commit-Queue: Danyao Wang <danyao@chromium.org>
Cr-Commit-Position: refs/heads/master@{#619052}
[modify] https://crrev.com/ffe65028319b24fe413809cdf6048d7936e252c3/third_party/blink/renderer/modules/payments/can_make_payment_test.cc
[modify] https://crrev.com/ffe65028319b24fe413809cdf6048d7936e252c3/third_party/blink/renderer/modules/payments/payment_request.cc
[modify] https://crrev.com/ffe65028319b24fe413809cdf6048d7936e252c3/third_party/blink/renderer/modules/payments/payment_request.h
[modify] https://crrev.com/ffe65028319b24fe413809cdf6048d7936e252c3/third_party/blink/renderer/modules/payments/payment_request.idl
[modify] https://crrev.com/ffe65028319b24fe413809cdf6048d7936e252c3/third_party/blink/renderer/platform/runtime_enabled_features.json5

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/8cf5f350873404095f36428a36e1da1e04b7c61a

commit 8cf5f350873404095f36428a36e1da1e04b7c61a
Author: Danyao Wang <danyao@chromium.org>
Date: Wed Jan 02 16:55:53 2019

Add use counter for more ~high entropy API calls.

hasEnrolledInstrument is a new API added to PaymentRequest spec to
replace the current canMakePayment API, which is considered ~high entroy
in crrev.com/c/1384047.

Bug: 915620,915907
Change-Id: I7ad4f37ef4223d89e142f29c9003f07311ec5ca1
Reviewed-on: https://chromium-review.googlesource.com/c/1391708
Commit-Queue: Danyao Wang <danyao@chromium.org>
Reviewed-by: Mike West <mkwst@chromium.org>
Cr-Commit-Position: refs/heads/master@{#619421}
[modify] https://crrev.com/8cf5f350873404095f36428a36e1da1e04b7c61a/third_party/blink/public/platform/web_feature.mojom
[modify] https://crrev.com/8cf5f350873404095f36428a36e1da1e04b7c61a/third_party/blink/renderer/modules/payments/payment_request.idl
[modify] https://crrev.com/8cf5f350873404095f36428a36e1da1e04b7c61a/tools/metrics/histograms/enums.xml