Fix behavior of HTMLInputElement.maxLength/minLength getter

components/autofill/core/browser/phone_field.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/phone_field.h"
 
 #include <string.h>
 #include <utility>
 
 #include "base/logging.h"
@@ skipping 133 matching lines @@
 
     // Attempt to parse according to the next grammar.
     for (; i < arraysize(kPhoneFieldGrammars) &&
          kPhoneFieldGrammars[i].regex != REGEX_SEPARATOR; ++i) {
       if (!ParsePhoneField(
               scanner,
               GetRegExp(kPhoneFieldGrammars[i].regex),
               &parsed_fields[kPhoneFieldGrammars[i].phone_part]))
         break;
       if (kPhoneFieldGrammars[i].max_size &&
-          (!parsed_fields[kPhoneFieldGrammars[i].phone_part]->max_length ||
+          (parsed_fields[kPhoneFieldGrammars[i].phone_part]->max_length <= 0 ||
             kPhoneFieldGrammars[i].max_size <
             parsed_fields[kPhoneFieldGrammars[i].phone_part]->max_length)) {
         break;
       }
     }
 
     if (i >= arraysize(kPhoneFieldGrammars)) {
       scanner->RewindTo(saved_cursor);
       return nullptr;  // Parsing failed.
     }
@@ skipping 123 matching lines @@
 bool PhoneField::ParsePhoneField(AutofillScanner* scanner,
                                  const std::string& regex,
                                  AutofillField** field) {
   return ParseFieldSpecifics(scanner,
                              base::UTF8ToUTF16(regex),
                              MATCH_DEFAULT | MATCH_TELEPHONE | MATCH_NUMBER,
                              field);
 }
 
 }  // namespace autofill