Push API: Validate storage before returning cached subscriptions

components/gcm_driver/fake_gcm_client.cc

 // Copyright 2014 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/gcm_driver/fake_gcm_client.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 
@@ skipping 123 matching lines @@
         instance_id_token_info->authorized_entity,
         instance_id_token_info->scope);
   }
 
   base::ThreadTaskRunnerHandle::Get()->PostTask(
       FROM_HERE, base::Bind(&FakeGCMClient::RegisterFinished,
                             weak_ptr_factory_.GetWeakPtr(), registration_info,
                             registration_id));
 }
 
+bool FakeGCMClient::ValidateRegistration(
+    const linked_ptr<RegistrationInfo>& registration_info,
+    const std::string& registration_id) {
+  return true;
+}
+
 void FakeGCMClient::Unregister(
     const linked_ptr<RegistrationInfo>& registration_info) {
   DCHECK(io_thread_->RunsTasksOnCurrentThread());
 
   base::ThreadTaskRunnerHandle::Get()->PostTask(
       FROM_HERE, base::Bind(&FakeGCMClient::UnregisterFinished,
                             weak_ptr_factory_.GetWeakPtr(), registration_info));
 }
 
 void FakeGCMClient::Send(const std::string& app_id,
@@ skipping 166 matching lines @@
     delegate_->OnMessageSendError(app_id, send_error_details);
 }
 
 void FakeGCMClient::SendAcknowledgement(const std::string& app_id,
                                         const std::string& message_id) {
   if (delegate_)
     delegate_->OnSendAcknowledged(app_id, message_id);
 }
 
 }  // namespace gcm