Fix auto raw pointer deduction on linux

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 610 matching lines @@
 bool FormStructure::ShouldBeCrowdsourced() const {
   return (has_password_field_ ||
           active_field_count() >= kRequiredFieldsForPredictionRoutines) &&
          ShouldBeParsed();
 }
 
 void FormStructure::UpdateFromCache(const FormStructure& cached_form) {
   // Map from field signatures to cached fields.
   std::map<std::string, const AutofillField*> cached_fields;
   for (size_t i = 0; i < cached_form.field_count(); ++i) {
-    const auto& field = cached_form.field(i);
+    auto* const field = cached_form.field(i);
     cached_fields[field->FieldSignatureAsStr()] = field;
   }
 
   for (auto& field : *this) {
     std::map<std::string, const AutofillField*>::const_iterator cached_field =
         cached_fields.find(field->FieldSignatureAsStr());
     if (cached_field != cached_fields.end()) {
       if (field->form_control_type != "select-one" &&
           field->value == cached_field->second->value) {
         // From the perspective of learning user data, text fields containing
@@ skipping 32 matching lines @@
                                       rappor::RapporServiceImpl* rappor_service,
                                       bool did_show_suggestions,
                                       bool observed_submission) const {
   size_t num_detected_field_types = 0;
   size_t num_server_mismatches = 0;
   size_t num_heuristic_mismatches = 0;
   size_t num_edited_autofilled_fields = 0;
   bool did_autofill_all_possible_fields = true;
   bool did_autofill_some_possible_fields = false;
   for (size_t i = 0; i < field_count(); ++i) {
-    const auto& field = this->field(i);
+    auto* const field = this->field(i);
 
     // No further logging for password fields.  Those are primarily related to a
     // different feature code path, and so make more sense to track outside of
     // this metric.
     if (field->form_control_type == "password")
       continue;
 
     // We count fields that were autofilled but later modified, regardless of
     // whether the data now in the field is recognized.
     if (field->previously_autofilled())
@@ skipping 625 matching lines @@
               filtered_strings[0].at(prefix_len)) {
         // Mismatch found.
         return filtered_strings[i].substr(0, prefix_len);
       }
     }
   }
   return filtered_strings[0];
 }
 
 }  // namespace autofill