Minor changes to still-unfinal chrome://settings/autofill wallet UI

components/autofill/core/common/autofill_pref_names.cc

Index: components/autofill/core/common/autofill_pref_names.cc
diff --git a/components/autofill/core/common/autofill_pref_names.cc b/components/autofill/core/common/autofill_pref_names.cc
index 829d5e7c15fe43046fbb1c0e319c17d2660f7115..62fe49bf60ba0de8007d134f10cb736ba114fe26 100644
--- a/components/autofill/core/common/autofill_pref_names.cc
+++ b/components/autofill/core/common/autofill_pref_names.cc
@@ -38,5 +38,8 @@ const char kAutofillPositiveUploadRate[] = "autofill.positive_upload_rate";
 // true, then kAutofillMacAddressBookQueried is expected to also be true.
 const char kAutofillUseMacAddressBook[] = "autofill.use_mac_address_book";
 
+// Boolean that's true when Wallet card and address import is enabled.
+const char kAutofillWalletImportEnabled[] = "autofill.wallet_import_enabled";
+
 }  // namespace prefs
 }  // namespace autofill