Refactor common invalidation framework types

sync/tools/sync_listen_notifications.cc

Index: sync/tools/sync_listen_notifications.cc
diff --git a/sync/tools/sync_listen_notifications.cc b/sync/tools/sync_listen_notifications.cc
index b70ee6d57c5717eaad37070e4bb0e2c793256eff..f9d1989de8fed589e376349e2497b0f407fcc331 100644
--- a/sync/tools/sync_listen_notifications.cc
+++ b/sync/tools/sync_listen_notifications.cc
@@ -59,12 +59,10 @@ class NotificationPrinter : public InvalidationHandler {
 
   virtual void OnIncomingInvalidation(
       const ObjectIdInvalidationMap& invalidation_map) OVERRIDE {
-    for (ObjectIdInvalidationMap::const_iterator it = invalidation_map.begin();
-         it != invalidation_map.end(); ++it) {
-      LOG(INFO) << "Remote invalidation: id = "
-                << ObjectIdToString(it->first)
-                << ", version = " << it->second.version
-                << ", payload = " << it->second.payload;
+    ObjectIdSet ids = invalidation_map.GetObjectIds();
+    for (ObjectIdSet::const_iterator it = ids.begin(); it != ids.end(); ++it) {
+      LOG(INFO) << "Remote invalidation: "
+                << invalidation_map.ToString();
     }
   }