Finish deinlining virtual methods.

chrome/browser/sync/glue/history_model_worker.cc

 // Copyright (c) 2010 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/glue/history_model_worker.h"
 
 #include "base/message_loop.h"
 #include "base/ref_counted.h"
 #include "base/task.h"
 #include "base/waitable_event.h"
@@ skipping 32 matching lines @@
 HistoryModelWorker::~HistoryModelWorker() {
 }
 
 void HistoryModelWorker::DoWorkAndWaitUntilDone(Callback0::Type* work) {
   WaitableEvent done(false, false);
   scoped_refptr<WorkerTask> task(new WorkerTask(work, &done));
   history_service_->ScheduleDBTask(task.get(), this);
   done.Wait();
 }
 
+ModelSafeGroup HistoryModelWorker::GetModelSafeGroup() {
+  return GROUP_HISTORY;
+}
+
 bool HistoryModelWorker::CurrentThreadIsWorkThread() {
   // TODO(ncarter): How to determine this?
   return true;
 }
 
 }  // namespace browser_sync