Refactor following sync commit loop change

sync/sessions/sync_session.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "sync/sessions/sync_session.h"
 
 #include <algorithm>
 #include <iterator>
 
 #include "base/logging.h"
@@ skipping 216 matching lines @@
 //
 bool IsError(SyncerError error) {
   return error != UNSET
       && error != SYNCER_OK;
 }
 }  // namespace
 
 bool SyncSession::Succeeded() const {
   const bool download_updates_error =
       IsError(status_controller_->error().last_download_updates_result);
-  const bool post_commit_error =
-      IsError(status_controller_->error().last_post_commit_result);
-  const bool process_commit_response_error =
-      IsError(status_controller_->error().last_process_commit_response_result);
-  return !download_updates_error
-      && !post_commit_error
-      && !process_commit_response_error;
+  const bool commit_error =
+      IsError(status_controller_->error().commit_result);
+  return !download_updates_error && !commit_error;
 }
 
 }  // namespace sessions
 }  // namespace browser_sync