[Password Manager] Send username correction votes

components/autofill/core/common/password_form.h

Index: components/autofill/core/common/password_form.h
diff --git a/components/autofill/core/common/password_form.h b/components/autofill/core/common/password_form.h
index 747162302360371c44a948482130b710068ce08a..8bcf44850a8d6f537694bcedfcddb219b24931a7 100644
--- a/components/autofill/core/common/password_form.h
+++ b/components/autofill/core/common/password_form.h
@@ -17,6 +17,12 @@
 
 namespace autofill {
 
+// Pair of possible username value and field name that contained this value.
+using PossibleUsernamePair = std::pair<base::string16, base::string16>;
+
+// Vector of possible username values and corresponding field names.
+using PossibleUsernamesVector = std::vector<PossibleUsernamePair>;
+
 // The PasswordForm struct encapsulates information about a login form,
 // which can be an HTML form or a dialog with username/password text fields.
 //
@@ -141,7 +147,7 @@ struct PasswordForm {
   // determining the username are incorrect. Optional.
   //
   // When parsing an HTML form, this is typically empty.
-  std::vector<base::string16> other_possible_usernames;
+  PossibleUsernamesVector other_possible_usernames;
 
   // The name of the input element corresponding to the current password.
   // Optional (improves scoring).
@@ -301,6 +307,10 @@ struct LessThanUniqueKey {
                   const std::unique_ptr<PasswordForm>& right) const;
 };
 
+// Converts a vector of possible usernames to string.
+base::string16 OtherPossibleUsernamesToString(
+    const PossibleUsernamesVector& possible_usernames);
+
 // For testing.
 std::ostream& operator<<(std::ostream& os, PasswordForm::Layout layout);
 std::ostream& operator<<(std::ostream& os, const PasswordForm& form);