sync: Initialize entries with a valid model type

sync/syncable/mutable_entry.cc

Index: sync/syncable/mutable_entry.cc
diff --git a/sync/syncable/mutable_entry.cc b/sync/syncable/mutable_entry.cc
index 64a23ced691f04c7f20b9dd1ae1a0504ebc2e878..816e951ed4d3d16ab3749bc1e65e238548ac2ca0 100644
--- a/sync/syncable/mutable_entry.cc
+++ b/sync/syncable/mutable_entry.cc
@@ -19,15 +19,9 @@ using std::string;
 namespace syncer {
 namespace syncable {
 
-MutableEntry::MutableEntry(WriteTransaction* trans, Create,
-                           const Id& parent_id, const string& name)
-    : Entry(trans),
-      write_transaction_(trans) {
-  Init(trans, parent_id, name);
-}
-
-
-void MutableEntry::Init(WriteTransaction* trans, const Id& parent_id,
+void MutableEntry::Init(WriteTransaction* trans,
+                        ModelType model_type,
+                        const Id& parent_id,
                         const string& name) {
   scoped_ptr<EntryKernel> kernel(new EntryKernel);
   kernel_ = NULL;
@@ -43,9 +37,15 @@ void MutableEntry::Init(WriteTransaction* trans, const Id& parent_id,
   // We match the database defaults here
   kernel->put(BASE_VERSION, CHANGES_VERSION);
   kernel->put(SERVER_ORDINAL_IN_PARENT, NodeOrdinal::CreateInitialOrdinal());
-  if (!trans->directory()->InsertEntry(trans, kernel.get())) {
-    return; // We failed inserting, nothing more to do.
-  }
+
+  // Normally the SPECIFICS setting code is wrapped in logic to deal with
+  // unknown fields and encryption.  Since all we want to do here is ensure that
+  // GetModelType() returns a correct value from the very beginning, these
+  // few lines are sufficient.
+  sync_pb::EntitySpecifics specifics;
+  AddDefaultFieldValue(model_type, &specifics);
+  kernel->put(SPECIFICS, specifics);
+
   // Because this entry is new, it was originally deleted.
   kernel->put(IS_DEL, true);
   trans->SaveOriginal(kernel.get());
@@ -55,6 +55,17 @@ void MutableEntry::Init(WriteTransaction* trans, const Id& parent_id,
   kernel_ = kernel.release();
 }
 
+MutableEntry::MutableEntry(WriteTransaction* trans,
+                           Create,
+                           ModelType model_type,
+                           const Id& parent_id,
+                           const string& name)
+    : Entry(trans),
+      write_transaction_(trans) {
+  Init(trans, model_type, parent_id, name);
+  DCHECK(trans->directory()->InsertEntry(trans, kernel_));
+}
+
 MutableEntry::MutableEntry(WriteTransaction* trans, CreateNewUpdateItem,
                            const Id& id)
     : Entry(trans), write_transaction_(trans) {