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

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

Index: third_party/libaddressinput/chromium/cpp/src/rule.cc
diff --git a/third_party/libaddressinput/chromium/cpp/src/rule.cc b/third_party/libaddressinput/chromium/cpp/src/rule.cc
index 1566f646d15366e093d3a438551f172406edf109..5551ed44d19b127d74caa264f52016556703e703 100644
--- a/third_party/libaddressinput/chromium/cpp/src/rule.cc
+++ b/third_party/libaddressinput/chromium/cpp/src/rule.cc
@@ -24,6 +24,7 @@
 
 #include "grit.h"
 #include "messages.h"
+#include "region_data_constants.h"
 #include "util/json.h"
 #include "util/string_split.h"
 
@@ -32,6 +33,9 @@ namespace addressinput {
 
 namespace {
 
+// Allocated once and leaked on shutdown.
+static Rule* default_rule = NULL;
+
 bool ParseToken(char c, AddressField* field) {
   assert(field != NULL);
   switch (c) {
@@ -171,6 +175,16 @@ Rule::Rule()
 
 Rule::~Rule() {}
 
+// static
+const Rule& Rule::GetDefault() {
+  if (default_rule == NULL) {
+    default_rule = new Rule;
+    default_rule->ParseSerializedRule(
+        RegionDataConstants::GetDefaultRegionData());
+  }
+  return *default_rule;
+}
+
 void Rule::CopyFrom(const Rule& rule) {
   format_ = rule.format_;
   required_ = rule.required_;