[Autofill] Update the autocomplete types implementation to match the current HTML spec.

chrome/browser/autofill/form_field.cc

 // Copyright (c) 2011 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 "chrome/browser/autofill/form_field.h"
 
 #include <stddef.h>
 #include <string>
 #include <utility>
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/string_util.h"
 #include "base/stringprintf.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/autofill/address_field.h"
 #include "chrome/browser/autofill/autofill_field.h"
 #include "chrome/browser/autofill/autofill_regexes.h"
 #include "chrome/browser/autofill/autofill_scanner.h"
 #include "chrome/browser/autofill/credit_card_field.h"
 #include "chrome/browser/autofill/email_field.h"
 #include "chrome/browser/autofill/field_types.h"
 #include "chrome/browser/autofill/form_structure.h"
 #include "chrome/browser/autofill/name_field.h"
 #include "chrome/browser/autofill/phone_field.h"
 #include "ui/base/l10n/l10n_util.h"
 
 namespace {
 
-bool IsTextField(const string16& type) {
-  return type == ASCIIToUTF16("text");
+bool IsTextField(const std::string& type) {
+  return type == "text";
 }
 
-bool IsEmailField(const string16& type) {
-  return type == ASCIIToUTF16("email");
+bool IsEmailField(const std::string& type) {
+  return type == "email";
 }
 
-bool IsTelephoneField(const string16& type) {
-  return type == ASCIIToUTF16("tel");
+bool IsTelephoneField(const std::string& type) {
+  return type == "tel";
 }
 
-bool IsSelectField(const string16& type) {
-  return type == ASCIIToUTF16("select-one");
+bool IsSelectField(const std::string& type) {
+  return type == "select-one";
 }
 
 }  // namespace
 
 // static
 void FormField::ParseFormFields(const std::vector<AutofillField*>& fields,
                                 FieldTypeMap* map) {
   // Set up a working copy of the fields to be processed.
   std::vector<const AutofillField*> remaining_fields(fields.size());
   std::copy(fields.begin(), fields.end(), remaining_fields.begin());
@@ skipping 122 matching lines @@
       continue;
     }
 
     // Add entries into the map for each field type found in |form_field|.
     bool ok = form_field->ClassifyField(map);
     DCHECK(ok);
   }
 
   std::swap(*fields, remaining_fields);
 }