Rename InvalidationVersionTracker to InvalidationStateTracker in preparation

to add more methods to that class.

BUG=124140
Review URL: https://chromiumcodereview.appspot.com/10407014

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@137685 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 37 insertions, 0 deletions

diff --git a/sync/notifier/invalidation_state_tracker.h b/sync/notifier/invalidation_state_tracker.h
new file mode 100644
index 0000000..dc8ef26
--- /dev/null
+++ b/sync/notifier/invalidation_state_tracker.h
@@ -0,0 +1,37 @@
+// 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.
+//
+// An InvalidationVersionTracker is an interface that handles getting
+// and setting (persisting) max invalidation versions.
+
+#ifndef SYNC_NOTIFIER_INVALIDATION_STATE_TRACKER_H_
+#define SYNC_NOTIFIER_INVALIDATION_STATE_TRACKER_H_
+
+#include <map>
+
+#include "base/basictypes.h"
+#include "sync/syncable/model_type.h"
+
+namespace sync_notifier {
+
+typedef std::map<syncable::ModelType, int64> InvalidationVersionMap;
+
+class InvalidationStateTracker {
+ public:
+  InvalidationStateTracker() {}
+
+  virtual InvalidationVersionMap GetAllMaxVersions() const = 0;
+
+  // |max_version| should be strictly greater than any existing max
+  // version for |model_type|.
+  virtual void SetMaxVersion(syncable::ModelType model_type,
+                             int64 max_version) = 0;
+
+ protected:
+  virtual ~InvalidationStateTracker() {}
+};
+
+}  // namespace sync_notifier
+
+#endif  // SYNC_NOTIFIER_INVALIDATION_STATE_TRACKER_H_