drive: Stop setting dummy resource ID for "drive" and "other"

chrome/browser/chromeos/drive/sync/entry_update_performer.cc

Index: chrome/browser/chromeos/drive/sync/entry_update_performer.cc
diff --git a/chrome/browser/chromeos/drive/sync/entry_update_performer.cc b/chrome/browser/chromeos/drive/sync/entry_update_performer.cc
index a1c0a507be06aae50dac0444b8f87888493b175c..e60cc03674b0c21d218f3447c95eeb9835661bb3 100644
--- a/chrome/browser/chromeos/drive/sync/entry_update_performer.cc
+++ b/chrome/browser/chromeos/drive/sync/entry_update_performer.cc
@@ -139,16 +139,12 @@ void EntryUpdatePerformer::UpdateEntryAfterPrepare(
     return;
   }
 
-  std::string parent_resource_id;
-  if (!util::IsSpecialResourceId(parent_entry->resource_id()))
-    parent_resource_id = parent_entry->resource_id();
-
   base::Time last_modified =
       base::Time::FromInternalValue(entry->file_info().last_modified());
   base::Time last_accessed =
       base::Time::FromInternalValue(entry->file_info().last_accessed());
   scheduler_->UpdateResource(
-      entry->resource_id(), parent_resource_id,
+      entry->resource_id(), parent_entry->resource_id(),
       entry->title(), last_modified, last_accessed,
       ClientContext(BACKGROUND),
       base::Bind(&EntryUpdatePerformer::UpdateEntryAfterUpdateResource,