#include "base/basictypes.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
+#include "base/threading/thread_checker.h"
#include "base/time/time.h"
#include "chrome/browser/component_updater/crx_downloader.h"
#include "net/url_request/url_fetcher_delegate.h"
int64 downloaded_bytes_;
int64 total_bytes_;
+ base::ThreadChecker thread_checker_;
+
DISALLOW_COPY_AND_ASSIGN(UrlFetcherDownloader);
};