Adds additional fields to web::NavigationItem.

ios/web/public/favicon_status.cc

Index: ios/web/public/favicon_status.cc
diff --git a/ios/web/public/favicon_status.cc b/ios/web/public/favicon_status.cc
new file mode 100644
index 0000000000000000000000000000000000000000..8c224436d1062e94730ebb2a49fd9fa26b3f9f28
--- /dev/null
+++ b/ios/web/public/favicon_status.cc
@@ -0,0 +1,14 @@
+// Copyright 2014 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 "ios/web/public/favicon_status.h"
+
+namespace web {
+
+FaviconStatus::FaviconStatus() : valid(false) {
+  // TODO(rohitrao): Add a GetDefaultFavicon() method to WebClient and call it
+  // here.
+}
+
+}  // namespace web