Sending autofill types for username fields in sign-in forms for improving username detection.

components/autofill/core/browser/form_structure.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/autofill/core/browser/form_structure.h"
 
 #include <stdint.h>
 
 #include <algorithm>
 #include <map>
@@ skipping 291 matching lines @@
       autofill_count_(0),
       active_field_count_(0),
       upload_required_(USE_UPLOAD_RATES),
       has_author_specified_types_(false),
       has_author_specified_sections_(false),
       has_author_specified_upi_vpa_hint_(false),
       was_parsed_for_autocomplete_attributes_(false),
       has_password_field_(false),
       is_form_tag_(form.is_form_tag),
       is_formless_checkout_(form.is_formless_checkout),
-      all_fields_are_passwords_(true) {
+      all_fields_are_passwords_(true),
+      is_signin_upload_(false) {
   // Copy the form fields.
   std::map<base::string16, size_t> unique_names;
   for (const FormFieldData& field : form.fields) {
     if (!ShouldSkipField(field))
       ++active_field_count_;
 
     if (field.form_control_type == "password")
       has_password_field_ = true;
     else
       all_fields_are_passwords_ = false;
@@ skipping 283 matching lines @@
   for (const auto& field : *this) {
     if (field && field->IsFieldFillable())
       ++autofill_count_;
   }
 }
 
 bool FormStructure::ShouldBeParsed() const {
   if (active_field_count() < kRequiredFieldsForPredictionRoutines &&
       (!all_fields_are_passwords() ||
        active_field_count() < kRequiredFieldsForFormsWithOnlyPasswordFields) &&
-      !has_author_specified_types_) {
+      !is_signin_upload_ && !has_author_specified_types_) {
     return false;
   }
 
   // Rule out http(s)://*/search?...
   //  e.g. http://www.google.com/search?q=...
   //       http://search.yahoo.com/search?p=...
   if (target_url_.path_piece() == "/search")
     return false;
 
   bool has_text_field = false;
@@ skipping 711 matching lines @@
               filtered_strings[0].at(prefix_len)) {
         // Mismatch found.
         return filtered_strings[i].substr(0, prefix_len);
       }
     }
   }
   return filtered_strings[0];
 }
 
 }  // namespace autofill