Add country combobox to change country and rebuild address inputs.

chrome/browser/ui/autofill/autofill_dialog_i18n_input.cc

Index: chrome/browser/ui/autofill/autofill_dialog_i18n_input.cc
diff --git a/chrome/browser/ui/autofill/autofill_dialog_i18n_input.cc b/chrome/browser/ui/autofill/autofill_dialog_i18n_input.cc
index f642bbf46726a782f8bb9f184480f4381882fb22..333277c5ffb477fc515c9842b5113abca5316a59 100644
--- a/chrome/browser/ui/autofill/autofill_dialog_i18n_input.cc
+++ b/chrome/browser/ui/autofill/autofill_dialog_i18n_input.cc
@@ -101,8 +101,7 @@ void BuildAddressInputs(common::AddressType address_type,
       billing ? ADDRESS_BILLING_COUNTRY : ADDRESS_HOME_COUNTRY;
   base::string16 placeholder_text =
       l10n_util::GetStringUTF16(IDS_AUTOFILL_FIELD_LABEL_COUNTRY);
-  // TODO(dbeam): unhide so users can switch countries. http://crbug.com/331544
-  DetailInput input = { DetailInput::NONE, server_type, placeholder_text };
+  DetailInput input = { DetailInput::LONG, server_type, placeholder_text };
   inputs->push_back(input);
 }