PaymentHandler: Implement PaymentInstruments.has().

content/browser/payments/payment_app_database.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 "content/browser/payments/payment_app_database.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/optional.h"
@@ skipping 117 matching lines @@
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
 
   service_worker_context_->FindReadyRegistrationForPattern(
       scope,
       base::Bind(
           &PaymentAppDatabase::DidFindRegistrationToReadPaymentInstrument,
           weak_ptr_factory_.GetWeakPtr(), instrument_key,
           base::Passed(std::move(callback))));
 }
 
+void PaymentAppDatabase::HasPaymentInstrument(
+    const GURL& scope,
+    const std::string& instrument_key,
+    HasPaymentInstrumentCallback callback) {
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+
+  service_worker_context_->FindReadyRegistrationForPattern(
+      scope,
+      base::Bind(&PaymentAppDatabase::DidFindRegistrationToHasPaymentInstrument,
+                 weak_ptr_factory_.GetWeakPtr(), instrument_key,
+                 base::Passed(std::move(callback))));
+}
+
 void PaymentAppDatabase::WritePaymentInstrument(
     const GURL& scope,
     const std::string& instrument_key,
     PaymentInstrumentPtr instrument,
     WritePaymentInstrumentCallback callback) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
 
   service_worker_context_->FindReadyRegistrationForPattern(
       scope,
       base::Bind(
@@ skipping 194 matching lines @@
   PaymentInstrumentPtr instrument = DeserializePaymentInstrument(data[0]);
   if (!instrument) {
     std::move(callback).Run(PaymentInstrument::New(),
                             PaymentHandlerStatus::STORAGE_OPERATION_FAILED);
     return;
   }
 
   std::move(callback).Run(std::move(instrument), PaymentHandlerStatus::SUCCESS);
 }
 
+void PaymentAppDatabase::DidFindRegistrationToHasPaymentInstrument(
+    const std::string& instrument_key,
+    HasPaymentInstrumentCallback callback,
+    ServiceWorkerStatusCode status,
+    scoped_refptr<ServiceWorkerRegistration> registration) {
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+  if (status != SERVICE_WORKER_OK) {
+    std::move(callback).Run(PaymentHandlerStatus::NO_ACTIVE_WORKER);
+    return;
+  }
+
+  service_worker_context_->GetRegistrationUserData(
+      registration->id(), {instrument_key},
+      base::Bind(&PaymentAppDatabase::DidHasPaymentInstrument,
+                 weak_ptr_factory_.GetWeakPtr(), registration->id(),
+                 instrument_key, base::Passed(std::move(callback))));
+}
+
+void PaymentAppDatabase::DidHasPaymentInstrument(
+    int64_t registration_id,
+    const std::string& instrument_key,
+    DeletePaymentInstrumentCallback callback,
+    const std::vector<std::string>& data,
+    ServiceWorkerStatusCode status) {
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+  if (status != SERVICE_WORKER_OK || data.size() != 1) {
+    std::move(callback).Run(PaymentHandlerStatus::NOT_FOUND);
+    return;
+  }
+
+  std::move(callback).Run(PaymentHandlerStatus::SUCCESS);
+}
+
 void PaymentAppDatabase::DidFindRegistrationToWritePaymentInstrument(
     const std::string& instrument_key,
     PaymentInstrumentPtr instrument,
     WritePaymentInstrumentCallback callback,
     ServiceWorkerStatusCode status,
     scoped_refptr<ServiceWorkerRegistration> registration) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   if (status != SERVICE_WORKER_OK) {
     std::move(callback).Run(PaymentHandlerStatus::NO_ACTIVE_WORKER);
     return;
@@ skipping 23 matching lines @@
     WritePaymentInstrumentCallback callback,
     ServiceWorkerStatusCode status) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   return std::move(callback).Run(
       status == SERVICE_WORKER_OK
           ? PaymentHandlerStatus::SUCCESS
           : PaymentHandlerStatus::STORAGE_OPERATION_FAILED);
 }
 
 }  // namespace content