[sync] Componentize sync: Part 6: Add more SYNC_EXPORTs to files in src/sync/

sync/notifier/invalidation_util.h

Index: sync/notifier/invalidation_util.h
diff --git a/sync/notifier/invalidation_util.h b/sync/notifier/invalidation_util.h
index 414e3fe4a7e5f1c42b5a6f6cd8cb3e9cb300543e..670f61209ea1cae00fbf011b3a398fd001c408c3 100644
--- a/sync/notifier/invalidation_util.h
+++ b/sync/notifier/invalidation_util.h
@@ -25,7 +25,8 @@ class Invalidation;
 class ObjectId;
 
 // Gmock print helper
-void PrintTo(const invalidation::ObjectId& id, std::ostream* os);
+SYNC_EXPORT_PRIVATE void PrintTo(const invalidation::ObjectId& id,
+                                 std::ostream* os);
 
 }  // namespace invalidation
 
@@ -51,7 +52,8 @@ scoped_ptr<base::DictionaryValue> ObjectIdToValue(
 bool ObjectIdFromValue(const base::DictionaryValue& value,
                        invalidation::ObjectId* out);
 
-std::string ObjectIdToString(const invalidation::ObjectId& object_id);
+SYNC_EXPORT_PRIVATE std::string ObjectIdToString(
+    const invalidation::ObjectId& object_id);
 
 SYNC_EXPORT_PRIVATE ObjectIdSet ModelTypeSetToObjectIdSet(ModelTypeSet models);
 ModelTypeSet ObjectIdSetToModelTypeSet(const ObjectIdSet& ids);