sync: Enable typed tombstones commits

sync/syncable/model_type_unittest.cc

Index: sync/syncable/model_type_unittest.cc
diff --git a/sync/syncable/model_type_unittest.cc b/sync/syncable/model_type_unittest.cc
index 3ac9fd116f5a67a9802c56f2787d385d3cd14c16..7bf50e55ed84f418d7935d0616ce711102498431 100644
--- a/sync/syncable/model_type_unittest.cc
+++ b/sync/syncable/model_type_unittest.cc
@@ -9,6 +9,7 @@
 #include "base/memory/scoped_ptr.h"
 #include "base/test/values_test_util.h"
 #include "base/values.h"
+#include "sync/protocol/sync.pb.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace syncer {
@@ -117,5 +118,25 @@ TEST_F(ModelTypeTest, ModelTypeSetFromString) {
       two.Equals(ModelTypeSetFromString(ModelTypeSetToString(two))));
 }
 
+TEST_F(ModelTypeTest, DefaultFieldValues) {
+  syncer::ModelTypeSet types = syncer::ProtocolTypes();
+  for (ModelTypeSet::Iterator it = types.First(); it.Good(); it.Inc()) {
+    SCOPED_TRACE(ModelTypeToString(it.Get()));
+
+    sync_pb::EntitySpecifics specifics;
+    syncer::AddDefaultFieldValue(it.Get(), &specifics);
+    EXPECT_TRUE(specifics.IsInitialized());
+
+    std::string tmp;
+    EXPECT_TRUE(specifics.SerializeToString(&tmp));
+
+    sync_pb::EntitySpecifics from_string;
+    EXPECT_TRUE(from_string.ParseFromString(tmp));
+    EXPECT_TRUE(from_string.IsInitialized());
+
+    EXPECT_EQ(it.Get(), syncer::GetModelTypeFromSpecifics(from_string));
+  }
+}
+
 }  // namespace
 }  // namespace syncer