Prevent usage of web payments API over insecure HTTPS.

components/payments/content/payment_request_state.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/payments/content/payment_request_state.h"
 
 #include <algorithm>
 #include <set>
 #include <utility>
 
@@ skipping 33 matching lines @@
 
 void PaymentRequestState::OnPaymentResponseReady(
     mojom::PaymentResponsePtr payment_response) {
   delegate_->OnPaymentResponseAvailable(std::move(payment_response));
 }
 
 bool PaymentRequestState::CanMakePayment() const {
   for (const std::unique_ptr<PaymentInstrument>& instrument :
        available_instruments_) {
     if (instrument->IsValidForCanMakePayment() &&
         spec_->supported_card_networks_set().count(

[Mathieu, 2017/04/17 03:20:45]

can you file a bug that this line is unnecessary since available_instruments_
only contains supported instruments

[please use gerrit instead, 2017/04/17 18:19:54]

I've changed this to DCHECK instead.

             instrument.get()->method_name())) {
       return true;
     }
   }
   return false;
 }
 
+bool PaymentRequestState::AreRequestedMethodsSupported() const {
+  return !spec_->supported_card_networks().empty();
+}
+
 void PaymentRequestState::AddObserver(Observer* observer) {
   CHECK(observer);
   observers_.AddObserver(observer);
 }
 
 void PaymentRequestState::RemoveObserver(Observer* observer) {
   observers_.RemoveObserver(observer);
 }
 
 void PaymentRequestState::GeneratePaymentResponse() {
@@ skipping 157 matching lines @@
 bool PaymentRequestState::ArePaymentOptionsSatisfied() {
   // TODO(mathp): Have a measure of shipping address completeness.
   if (spec_->request_shipping() && selected_shipping_profile_ == nullptr)
     return false;
 
   profile_util::PaymentsProfileComparator comparator(app_locale_, *spec_);
   return comparator.IsContactInfoComplete(selected_contact_profile_);
 }
 
 }  // namespace payments