sync: make scheduling logic and job ownership more obvious.

sync/internal_api/public/sessions/model_neutral_state.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/internal_api/public/sessions/model_neutral_state.h"
 
 namespace syncer {
 namespace sessions {
 
 ModelNeutralState::ModelNeutralState()
@@ skipping 12 matching lines @@
       last_download_updates_result(UNSET),
       commit_result(UNSET),
       conflicts_resolved(false),
       items_committed(false),
       debug_info_sent(false),
       num_server_changes_remaining(0) {
 }
 
 ModelNeutralState::~ModelNeutralState() {}
 
+bool HasSyncerError(const ModelNeutralState& state) {
+  const bool get_key_error = SyncerErrorIsError(state.last_get_key_result);
+  const bool download_updates_error =
+      SyncerErrorIsError(state.last_download_updates_result);
+  const bool commit_error = SyncerErrorIsError(state.commit_result);
+  return get_key_error || download_updates_error || commit_error;
+}
+
 }  // namespace sessions
 }  // namespace syncer