Changed DB to store node positions as Ordinals.

sync/syncable/syncable_columns.h

Index: sync/syncable/syncable_columns.h
diff --git a/sync/syncable/syncable_columns.h b/sync/syncable/syncable_columns.h
index a6152c42de7d3f337bac8fa3819a01ee13784a2d..6f0fcc0e46f3ae1647bc309473c5d11eae6eafb5 100644
--- a/sync/syncable/syncable_columns.h
+++ b/sync/syncable/syncable_columns.h
@@ -23,7 +23,7 @@ static const ColumnSpec g_metas_columns[] = {
   {"metahandle", "bigint primary key ON CONFLICT FAIL"},
   {"base_version", "bigint default " CHANGES_VERSION_STRING},
   {"server_version", "bigint default 0"},
-  {"server_position_in_parent", "bigint default 0"},
+  {"server_ordinal_in_parent", "blob"},

[akalin, 2012/10/02 22:43:01]

i think this should be moved down to the blobs section below.  In fact, to
differentiate them from the other fields (which are serialized protos), maybe
something like:

// Blobs (serialized protos).
{"specifics"...}
...
// Blobs (ordinals).
{"server_ordinal"...},

(Might be easiest to put the column last).

   // This is the item ID that we store for the embedding application.
   {"local_external_id", "bigint default 0"},
   // These timestamps are kept in the same format as that of the