Add metrics for PasswordForm submission types

components/autofill/content/common/autofill_types_struct_traits.h

Index: components/autofill/content/common/autofill_types_struct_traits.h
diff --git a/components/autofill/content/common/autofill_types_struct_traits.h b/components/autofill/content/common/autofill_types_struct_traits.h
index 7d4c03035427ec97cd496d13f90986d53dd14d98..cd58e65b63b56e4344c918898ac29a57e411cf62 100644
--- a/components/autofill/content/common/autofill_types_struct_traits.h
+++ b/components/autofill/content/common/autofill_types_struct_traits.h
@@ -85,6 +85,15 @@ struct EnumTraits<autofill::mojom::PasswordFormFieldPredictionType,
                         autofill::PasswordFormFieldPredictionType* output);
 };
 
+template <>
+struct EnumTraits<autofill::mojom::PasswordFormSubmissionEvent,
+                  autofill::PasswordForm::SubmissionEvent> {
+  static autofill::mojom::PasswordFormSubmissionEvent ToMojom(
+      autofill::PasswordForm::SubmissionEvent input);
+  static bool FromMojom(autofill::mojom::PasswordFormSubmissionEvent input,
+                        autofill::PasswordForm::SubmissionEvent* output);
+};
+
 template <>
 struct StructTraits<autofill::mojom::FormFieldDataDataView,
                     autofill::FormFieldData> {
@@ -497,6 +506,11 @@ struct StructTraits<autofill::mojom::PasswordFormDataView,
     return r.does_look_like_signup_form;
   }
 
+  static autofill::PasswordForm::SubmissionEvent submission_event(
+      const autofill::PasswordForm& r) {
+    return r.submission_event;
+  }
+
   static bool Read(autofill::mojom::PasswordFormDataView data,
                    autofill::PasswordForm* out);
 };