drive: Make sync performers aware of locally created files

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

Index: chrome/browser/chromeos/drive/sync/entry_revert_performer.cc
diff --git a/chrome/browser/chromeos/drive/sync/entry_revert_performer.cc b/chrome/browser/chromeos/drive/sync/entry_revert_performer.cc
index ae6bf9f4d4efddc2939d2672b495e8d8c3521924..853039ee9de9f44149d366fe1219b34efcc4893b 100644
--- a/chrome/browser/chromeos/drive/sync/entry_revert_performer.cc
+++ b/chrome/browser/chromeos/drive/sync/entry_revert_performer.cc
@@ -110,6 +110,9 @@ void EntryRevertPerformer::RevertEntryAfterPrepare(
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   DCHECK(!callback.is_null());
 
+  if (error == FILE_ERROR_OK && entry->resource_id().empty())
+    error = FILE_ERROR_INVALID_OPERATION;
+
   if (error != FILE_ERROR_OK) {
     callback.Run(error);
     return;