Added HttpAuthFilter.

Original patch by [email protected] (http://codereview.chromium.org/646068)

BUG=29596
TEST=net_unittests.exe --gtest_filter="*HttpAuthFilterTest*"

Review URL: http://codereview.chromium.org/660193

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@40157 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/chrome/browser/io_thread.h b/chrome/browser/io_thread.h
index c0b9ccd..6de1bae4 100644
--- a/chrome/browser/io_thread.h
+++ b/chrome/browser/io_thread.h
@@ -60,6 +60,8 @@
   virtual void CleanUp();
 
  private:
+  net::HttpAuthHandlerFactory* CreateDefaultAuthHandlerFactory();
+
   void InitDnsMasterOnIOThread(
       bool prefetching_enabled,
       base::TimeDelta max_queue_delay,