Implement Invalidator::Acknowledge

sync/notifier/invalidation_notifier.h

Index: sync/notifier/invalidation_notifier.h
diff --git a/sync/notifier/invalidation_notifier.h b/sync/notifier/invalidation_notifier.h
index a1c4328b958d3b7100bebbb9111da04aa0a652ac..e70f9eb4f43d3a766003fb3b1ba1f9232a78fe46 100644
--- a/sync/notifier/invalidation_notifier.h
+++ b/sync/notifier/invalidation_notifier.h
@@ -7,7 +7,7 @@
 // up to the invalidation client.
 //
 // You probably don't want to use this directly; use
-// NonBlockingInvalidationNotifier.
+// NonBlockingInvalidator.
 
 #ifndef SYNC_NOTIFIER_INVALIDATION_NOTIFIER_H_
 #define SYNC_NOTIFIER_INVALIDATION_NOTIFIER_H_
@@ -41,7 +41,7 @@ class InvalidationNotifier
   // |invalidation_state_tracker| must be initialized.
   InvalidationNotifier(
       scoped_ptr<notifier::PushClient> push_client,
-      const InvalidationVersionMap& initial_max_invalidation_versions,
+      const InvalidationStateMap& initial_invalidation_state_map,
       const std::string& initial_invalidation_state,
       const WeakHandle<InvalidationStateTracker>&
           invalidation_state_tracker,
@@ -54,6 +54,8 @@ class InvalidationNotifier
   virtual void UpdateRegisteredIds(InvalidationHandler* handler,
                                    const ObjectIdSet& ids) OVERRIDE;
   virtual void UnregisterHandler(InvalidationHandler* handler) OVERRIDE;
+  virtual void Acknowledge(const invalidation::ObjectId& id,
+                           const AckHandle& ack_handle) OVERRIDE;
   virtual InvalidatorState GetInvalidatorState() const OVERRIDE;
   virtual void SetUniqueId(const std::string& unique_id) OVERRIDE;
   virtual void SetStateDeprecated(const std::string& state) OVERRIDE;
@@ -80,7 +82,7 @@ class InvalidationNotifier
   InvalidatorRegistrar registrar_;
 
   // Passed to |invalidation_listener_|.
-  const InvalidationVersionMap initial_max_invalidation_versions_;
+  const InvalidationStateMap initial_invalidation_state_map_;
 
   // Passed to |invalidation_listener_|.
   const WeakHandle<InvalidationStateTracker>