[BackgroundSync] Add browser side support for SyncRegistration.done

content/browser/background_sync/background_sync_manager.h

Index: content/browser/background_sync/background_sync_manager.h
diff --git a/content/browser/background_sync/background_sync_manager.h b/content/browser/background_sync/background_sync_manager.h
index 673f41f98cb1f2733d7f767964063a048e875f5c..285f68b43776ff32b983a181c905f88e44415183 100644
--- a/content/browser/background_sync/background_sync_manager.h
+++ b/content/browser/background_sync/background_sync_manager.h
@@ -21,6 +21,7 @@
 #include "content/browser/cache_storage/cache_storage_scheduler.h"
 #include "content/browser/service_worker/service_worker_context_observer.h"
 #include "content/browser/service_worker/service_worker_storage.h"
+#include "content/common/background_sync_service.mojom.h"
 #include "content/common/content_export.h"
 #include "content/common/service_worker/service_worker_status_code.h"
 #include "url/gurl.h"
@@ -53,6 +54,8 @@ class CONTENT_EXPORT BackgroundSyncManager
   using StatusAndRegistrationCallback =
       base::Callback<void(BackgroundSyncStatus,
                           scoped_ptr<BackgroundSyncRegistrationHandle>)>;
+  using StatusAndStateCallback =
+      base::Callback<void(BackgroundSyncStatus, BackgroundSyncState)>;
   using StatusAndRegistrationsCallback = base::Callback<void(
       BackgroundSyncStatus,
       scoped_ptr<ScopedVector<BackgroundSyncRegistrationHandle>>)>;
@@ -242,6 +245,17 @@ class CONTENT_EXPORT BackgroundSyncManager
                           const StatusCallback& callback,
                           ServiceWorkerStatusCode status);
 
+  // NotifyWhenDone and its callbacks. See
+  // BackgroundSyncRegistrationHandle::NotifyWhenDone for detailed
+  // documentation.
+  void NotifyWhenDone(BackgroundSyncRegistrationHandle::HandleId handle_id,
+                      const StatusAndStateCallback& callback);
+  void NotifyWhenDoneImpl(
+      scoped_ptr<BackgroundSyncRegistrationHandle> registration_handle,
+      const StatusAndStateCallback& callback);
+  void NotifyWhenDoneDidFinish(const StatusAndStateCallback& callback,
+                               BackgroundSyncState status);
+
   // GetRegistration callbacks
   void GetRegistrationImpl(int64 sw_registration_id,
                            const RegistrationKey& registration_key,