[rac] Use stale libaddressinput data if download fails

third_party/libaddressinput/chromium/cpp/src/retriever.h

Index: third_party/libaddressinput/chromium/cpp/src/retriever.h
diff --git a/third_party/libaddressinput/chromium/cpp/src/retriever.h b/third_party/libaddressinput/chromium/cpp/src/retriever.h
index d30a76b5cf1c6dc104b335c41245720a21f4972b..e5811c0330e823db72fb525c3ad824962ff20525 100644
--- a/third_party/libaddressinput/chromium/cpp/src/retriever.h
+++ b/third_party/libaddressinput/chromium/cpp/src/retriever.h
@@ -87,9 +87,14 @@ class Retriever {
   const std::string validation_data_url_;
   scoped_ptr<Downloader> downloader_;
   scoped_ptr<Storage> storage_;
+
   // Holds pending requests. The callback pointers are owned.
   std::map<std::string, Callback*> requests_;
 
+  // Holds data from storage that has expired timestamps. If a download fails,
+  // then this data is used as fallback.
+  std::map<std::string, std::string> stale_data_;
+
   DISALLOW_COPY_AND_ASSIGN(Retriever);
 };