Implement Invalidator::Acknowledge

sync/notifier/invalidation_notifier.cc

Index: sync/notifier/invalidation_notifier.cc
diff --git a/sync/notifier/invalidation_notifier.cc b/sync/notifier/invalidation_notifier.cc
index 1b9830b40081b93aa40d9bc67cb28555201b3654..30e5df30f118921d2d7f9ab75e61ec3b8e7484c3 100644
--- a/sync/notifier/invalidation_notifier.cc
+++ b/sync/notifier/invalidation_notifier.cc
@@ -28,7 +28,7 @@ InvalidationNotifier::InvalidationNotifier(
       invalidation_state_tracker_(invalidation_state_tracker),
       client_info_(client_info),
       invalidation_bootstrap_data_(invalidation_bootstrap_data),
-      invalidation_listener_(push_client.Pass()) {
+      invalidation_listener_(&tick_clock_, push_client.Pass()) {
 }
 
 InvalidationNotifier::~InvalidationNotifier() {
@@ -52,6 +52,12 @@ void InvalidationNotifier::UnregisterHandler(InvalidationHandler* handler) {
   registrar_.UnregisterHandler(handler);
 }
 
+void InvalidationNotifier::Acknowledge(const invalidation::ObjectId& id,
+                                       const AckHandle& ack_handle) {
+  DCHECK(CalledOnValidThread());
+  invalidation_listener_.Acknowledge(id, ack_handle);
+}
+
 InvalidatorState InvalidationNotifier::GetInvalidatorState() const {
   DCHECK(CalledOnValidThread());
   return registrar_.GetInvalidatorState();