Add GROUP_FILE ModelSafeGroup

chrome/browser/sync/engine/model_safe_worker.cc

 // Copyright (c) 2011 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 "chrome/browser/sync/engine/model_safe_worker.h"
 
 #include "base/json/json_writer.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/values.h"
 
@@ skipping 41 matching lines @@
   }
   return it->second;
 }
 
 std::string ModelSafeGroupToString(ModelSafeGroup group) {
   switch (group) {
     case GROUP_UI:
       return "GROUP_UI";
     case GROUP_DB:
       return "GROUP_DB";
+    case GROUP_FILE:
+      return "GROUP_FILE";
     case GROUP_HISTORY:
       return "GROUP_HISTORY";
     case GROUP_PASSIVE:
       return "GROUP_PASSIVE";
     case GROUP_PASSWORD:
       return "GROUP_PASSWORD";
     default:
       NOTREACHED();
       return "INVALID";
   }
 }
 
 ModelSafeWorker::ModelSafeWorker() {}
 
 ModelSafeWorker::~ModelSafeWorker() {}
 
 void ModelSafeWorker::DoWorkAndWaitUntilDone(Callback0::Type* work) {
   work->Run();  // For GROUP_PASSIVE, we do the work on the current thread.
 }
 
 ModelSafeGroup ModelSafeWorker::GetModelSafeGroup() {
   return GROUP_PASSIVE;
 }
 
 }  // namespace browser_sync