Revert of [Password Manager] Send username correction votes

components/autofill/content/common/autofill_types.mojom

Index: components/autofill/content/common/autofill_types.mojom
diff --git a/components/autofill/content/common/autofill_types.mojom b/components/autofill/content/common/autofill_types.mojom
index 5e0c6ee9f3a6b6286d7ec98b32ae3598e3483762..d8012a15bbffc7731ae417f9b8a305ea73cbd605 100644
--- a/components/autofill/content/common/autofill_types.mojom
+++ b/components/autofill/content/common/autofill_types.mojom
@@ -139,12 +139,6 @@
   uint32 confirmation_field_signature;
 };
 
-// autofill::PossibleUsernamePair
-struct PossibleUsernamePair {
-  string value;
-  string field_name;
-};
-
 // autofill::PasswordForm
 struct PasswordForm {
   PasswordFormScheme scheme;
@@ -156,7 +150,7 @@
   string username_element;
   bool username_marked_by_site;
   string username_value;
-  array<PossibleUsernamePair> other_possible_usernames;
+  array<string> other_possible_usernames;
   string password_element;
   string password_value;
   bool password_value_is_default;