Add GROUP_FILE ModelSafeGroup

chrome/browser/sync/glue/file_model_worker.cc

Index: chrome/browser/sync/glue/file_model_worker.cc
diff --git a/chrome/browser/sync/glue/file_model_worker.cc b/chrome/browser/sync/glue/file_model_worker.cc
new file mode 100644
index 0000000000000000000000000000000000000000..04b7c22bf688569e13353861d1935a4b804754cd
--- /dev/null
+++ b/chrome/browser/sync/glue/file_model_worker.cc
@@ -0,0 +1,41 @@
+// 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/glue/file_model_worker.h"
+
+#include "base/synchronization/waitable_event.h"
+#include "content/browser/browser_thread.h"
+
+using base::WaitableEvent;
+
+namespace browser_sync {
+
+void FileModelWorker::DoWorkAndWaitUntilDone(Callback0::Type* work) {
+  if (BrowserThread::CurrentlyOn(BrowserThread::FILE)) {
+    DLOG(WARNING) << "DoWorkAndWaitUntilDone called from the FILE thread.";
+    work->Run();
+    return;
+  }
+  WaitableEvent done(false, false);
+  if (!BrowserThread::PostTask(BrowserThread::FILE, FROM_HERE,
+      NewRunnableMethod(this, &FileModelWorker::CallDoWorkAndSignalTask,
+                        work, &done))) {
+    NOTREACHED() << "Failed to post task to the db thread.";
+    return;
+  }
+  done.Wait();
+}
+
+void FileModelWorker::CallDoWorkAndSignalTask(Callback0::Type* work,
+                                                  WaitableEvent* done) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
+  work->Run();
+  done->Signal();
+}
+
+ModelSafeGroup FileModelWorker::GetModelSafeGroup() {
+  return GROUP_FILE;
+}
+
+}  // namespace browser_sync