Push API: Validate storage before returning cached subscriptions

components/gcm_driver/fake_gcm_driver.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_driver.h"
 
+#include "base/bind.h"
 #include "base/files/file_path.h"
 #include "base/sequenced_task_runner.h"
+#include "base/threading/thread_task_runner_handle.h"
 
 namespace gcm {
 
 FakeGCMDriver::FakeGCMDriver() : GCMDriver(base::FilePath(), nullptr) {
 }
 
 FakeGCMDriver::FakeGCMDriver(
     const scoped_refptr<base::SequencedTaskRunner>& blocking_task_runner)
     : GCMDriver(base::FilePath(), blocking_task_runner) {
 }
 
 FakeGCMDriver::~FakeGCMDriver() {
 }
 
+void FakeGCMDriver::ValidateRegistration(
+    const std::string& app_id,
+    const std::vector<std::string>& sender_ids,
+    const std::string& registration_id,
+    const ValidateRegistrationCallback& callback) {
+  base::ThreadTaskRunnerHandle::Get()->PostTask(
+      FROM_HERE, base::Bind(callback, true /* is_valid */));
+}
+
 void FakeGCMDriver::OnSignedIn() {
 }
 
 void FakeGCMDriver::OnSignedOut() {
 }
 
 void FakeGCMDriver::AddConnectionObserver(GCMConnectionObserver* observer) {
 }
 
 void FakeGCMDriver::RemoveConnectionObserver(GCMConnectionObserver* observer) {
@@ skipping 73 matching lines @@
 }
 
 void FakeGCMDriver::AddHeartbeatInterval(const std::string& scope,
                                          int interval_ms) {
 }
 
 void FakeGCMDriver::RemoveHeartbeatInterval(const std::string& scope) {
 }
 
 }  // namespace gcm