Plumb invalidations from Tango to the extensions code for the Push Messaging API.
BUG=139661,139663
Review URL: https://chromiumcodereview.appspot.com/10826156
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@152877 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/chrome/browser/sync/invalidation_frontend.h b/chrome/browser/sync/invalidation_frontend.h
new file mode 100644
index 0000000..9914271
--- /dev/null
+++ b/chrome/browser/sync/invalidation_frontend.h
@@ -0,0 +1,46 @@
+// Copyright (c) 2012 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 CHROME_BROWSER_SYNC_INVALIDATION_FRONTEND_H_
+#define CHROME_BROWSER_SYNC_INVALIDATION_FRONTEND_H_
+
+#include "sync/notifier/invalidation_util.h"
+
+namespace syncer {
+class SyncNotifierObserver;
+} // namespace syncer
+
+// Interface for classes that handle invalidation registrations and send out
+// invalidations to register handlers.
+class InvalidationFrontend {
+ public:
+ // Starts sending notifications to |handler|. |handler| must not be NULL,
+ // and it must not already be registered.
+ //
+ // Handler registrations are persisted across restarts of sync.
+ virtual void RegisterInvalidationHandler(
+ syncer::SyncNotifierObserver* handler) = 0;
+
+ // Updates the set of ObjectIds associated with |handler|. |handler| must
+ // not be NULL, and must already be registered. An ID must be registered for
+ // at most one handler.
+ //
+ // Registered IDs are persisted across restarts of sync.
+ virtual void UpdateRegisteredInvalidationIds(
+ syncer::SyncNotifierObserver* handler,
+ const syncer::ObjectIdSet& ids) = 0;
+
+ // Stops sending notifications to |handler|. |handler| must not be NULL, and
+ // it must already be registered. Note that this doesn't unregister the IDs
+ // associated with |handler|.
+ //
+ // Handler registrations are persisted across restarts of sync.
+ virtual void UnregisterInvalidationHandler(
+ syncer::SyncNotifierObserver* handler) = 0;
+
+ protected:
+ virtual ~InvalidationFrontend() { }
+};
+
+#endif // CHROME_BROWSER_SYNC_INVALIDATION_FRONTEND_H_
