[Password Generation] Use signatures for form matching

components/autofill/core/browser/form_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/form_field.h"
 
 #include <algorithm>
 #include <cstddef>
 #include <iterator>
 #include <memory>
 #include <string>
 #include <utility>
 
 #include "base/logging.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "components/autofill/core/browser/address_field.h"
 #include "components/autofill/core/browser/autofill_field.h"
 #include "components/autofill/core/browser/autofill_scanner.h"
 #include "components/autofill/core/browser/credit_card_field.h"
 #include "components/autofill/core/browser/email_field.h"
 #include "components/autofill/core/browser/form_structure.h"
 #include "components/autofill/core/browser/name_field.h"
 #include "components/autofill/core/browser/phone_field.h"
 #include "components/autofill/core/common/autofill_regexes.h"
+#include "components/autofill/core/common/autofill_util.h"
 
 namespace autofill {
 namespace {
 
 bool ShouldBeProcessed(const AutofillField* field) {
   // Ignore checkable fields as they interfere with parsers assuming context.
   // Eg., while parsing address, "Is PO box" checkbox after ADDRESS_LINE1
   // interferes with correctly understanding ADDRESS_LINE2.
   // Ignore fields marked as presentational. See
   // http://www.w3.org/TR/wai-aria/roles#presentation
@@ skipping 168 matching lines @@
   if ((match_type & MATCH_PASSWORD) && type == "password")
     return true;
 
   if ((match_type & MATCH_NUMBER) && type == "number")
     return true;
 
   return false;
 }
 
 }  // namespace autofill