[rac] Download all rules for a country code in libaddressinput.

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

Index: third_party/libaddressinput/chromium/cpp/src/rule.h
diff --git a/third_party/libaddressinput/chromium/cpp/src/rule.h b/third_party/libaddressinput/chromium/cpp/src/rule.h
index 428a44d66a5f01dc6a8febcc1af88e86294b9a78..eab1de7454dd23ddf2a62000a262b32d6c48ea3a 100644
--- a/third_party/libaddressinput/chromium/cpp/src/rule.h
+++ b/third_party/libaddressinput/chromium/cpp/src/rule.h
@@ -36,6 +36,11 @@ class Rule {
   Rule();
   ~Rule();
 
+  // Returns the default rule at a country level. If a country does not specify
+  // address format, for example, then the format from this rule should be used
+  // instead.
+  static const Rule& GetDefault();
+
   // Copies all data from |rule|.
   void CopyFrom(const Rule& rule);