[Password manager] Relplace the FormFieldData vector from autofill::FormData with named fields…

components/password_manager/core/browser/password_form_manager.cc

Index: components/password_manager/core/browser/password_form_manager.cc
diff --git a/components/password_manager/core/browser/password_form_manager.cc b/components/password_manager/core/browser/password_form_manager.cc
index 59eff7cc5235d839e224c9b1fa90916d4553389f..556fb22f4b26c99403450cd4554202ac44c2c528 100644
--- a/components/password_manager/core/browser/password_form_manager.cc
+++ b/components/password_manager/core/browser/password_form_manager.cc
@@ -710,7 +710,8 @@ void PasswordFormManager::CheckForAccountCreationForm(
     // to PasswordForm. Even without this check, these FormStructure's won't
     // be uploaded, but it makes it hard to see if we are encountering
     // unexpected errors.
-    if (!pending.form_data.fields.empty() &&
+    if (!pending.form_data.username_field.name.empty() &&
+        !pending.form_data.password_field.name.empty() &&
         pending_structure.FormSignature() !=
             observed_structure.FormSignature()) {
       UploadPasswordForm(pending.form_data,