BackgroundSyncManager tracks client registrations

content/browser/background_sync/client_background_sync_registration.cc

Index: content/browser/background_sync/client_background_sync_registration.cc
diff --git a/content/browser/background_sync/client_background_sync_registration.cc b/content/browser/background_sync/client_background_sync_registration.cc
new file mode 100644
index 0000000000000000000000000000000000000000..ddf1523c204b5137c0f859cc70356bff05b0f5b6
--- /dev/null
+++ b/content/browser/background_sync/client_background_sync_registration.cc
@@ -0,0 +1,40 @@
+// Copyright 2015 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/background_sync/client_background_sync_registration.h"
+
+#include "content/browser/background_sync/background_sync_manager.h"
+#include "content/public/browser/browser_thread.h"
+
+namespace content {
+
+ClientBackgroundSyncRegistration::ClientBackgroundSyncRegistration(
+    BackgroundSyncManager* background_sync_manager)
+    : background_sync_manager_(background_sync_manager) {
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+}
+
+ClientBackgroundSyncRegistration::~ClientBackgroundSyncRegistration() {
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+  DCHECK(background_sync_manager_);
+  if (IsValid())
+    background_sync_manager_->ReleaseClientRegistration(id());
+}
+
+void ClientBackgroundSyncRegistration::Unregister(
+    int64 sw_registration_id,
+    const StatusCallback& callback) {
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+  DCHECK(IsValid());
+
+  background_sync_manager_->Unregister(sw_registration_id,
+                                       options()->periodicity, id(), callback);
+}
+
+bool ClientBackgroundSyncRegistration::IsValid() const {
+  return BackgroundSyncRegistration::IsValid() &&
+         background_sync_manager_->HasClientRegistration(id());
+}
+
+}  // namespace content