PaymentHandler: Implement PaymentInstruments.keys().

content/browser/service_worker/service_worker_context_wrapper.h

 // Copyright 2013 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.
 
 #ifndef CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_CONTEXT_WRAPPER_H_
 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_CONTEXT_WRAPPER_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 171 matching lines @@
   //
   // Must be called from the IO thread.
   void FindReadyRegistrationForIdOnly(int64_t registration_id,
                                       const FindRegistrationCallback& callback);
 
   // All these methods must be called from the IO thread.
   void GetAllRegistrations(const GetRegistrationsInfosCallback& callback);
   void GetRegistrationUserData(int64_t registration_id,
                                const std::vector<std::string>& keys,
                                const GetUserDataCallback& callback);
+  void GetRegistrationUserDataByKeyPrefix(int64_t registration_id,
+                                          const std::string& key_prefix,
+                                          const GetUserDataCallback& callback);
   void StoreRegistrationUserData(
       int64_t registration_id,
       const GURL& origin,
       const std::vector<std::pair<std::string, std::string>>& key_value_pairs,
       const StatusCallback& callback);
   void ClearRegistrationUserData(int64_t registration_id,
                                  const std::vector<std::string>& keys,
                                  const StatusCallback& callback);
   void GetUserDataForAllRegistrations(
       const std::string& key,
@@ skipping 90 matching lines @@
 
   // The ResourceContext associated with this context.
   ResourceContext* resource_context_;
 
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerContextWrapper);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_CONTEXT_WRAPPER_H_