Autofill: Set requirements for number of recognized fields in an autofillable form

components/autofill/core/common/form_data.h

Index: components/autofill/core/common/form_data.h
diff --git a/components/autofill/core/common/form_data.h b/components/autofill/core/common/form_data.h
index f7b2c8dde52e3c49a81915ce07229ab81597c6bf..747fca96bfc1b3bef58a2c0d977b7c296db4cb3f 100644
--- a/components/autofill/core/common/form_data.h
+++ b/components/autofill/core/common/form_data.h
@@ -34,6 +34,8 @@ struct FormData {
   GURL action;
   // true if this form was submitted by a user gesture and not javascript.
   bool user_submitted;
+  // true if this form is a form tag.
+  bool is_form_tag;
   // A vector of all the input fields in the form.
   std::vector<FormFieldData> fields;
 };