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

chrome/browser/autofill/autocomplete_history_manager.cc

 // Copyright (c) 2012 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/autocomplete_history_manager.h"
 
 #include <vector>
 
 #include "base/string16.h"
 #include "base/string_number_conversions.h"
@@ skipping 80 matching lines @@
                          &serial)
       || serial == 0) {
     return false;
   }
 
   return true;
 }
 
 bool IsTextField(const FormFieldData& field) {
   return
-      field.form_control_type == ASCIIToUTF16("text") ||
-      field.form_control_type == ASCIIToUTF16("search") ||
-      field.form_control_type == ASCIIToUTF16("tel") ||
-      field.form_control_type == ASCIIToUTF16("url") ||
-      field.form_control_type == ASCIIToUTF16("email") ||
-      field.form_control_type == ASCIIToUTF16("text");
+      field.form_control_type == "text" ||
+      field.form_control_type == "search" ||
+      field.form_control_type == "tel" ||
+      field.form_control_type == "url" ||
+      field.form_control_type == "email" ||
+      field.form_control_type == "text";
 }
 
 }  // namespace
 
 AutocompleteHistoryManager::AutocompleteHistoryManager(
     WebContents* web_contents)
     : content::WebContentsObserver(web_contents),
       pending_query_handle_(0),
       query_id_(0),
       external_delegate_(NULL) {
@@ skipping 180 matching lines @@
                                              autofill_icons_,
                                              autofill_unique_ids_));
   }
 
   query_id_ = 0;
   autofill_values_.clear();
   autofill_labels_.clear();
   autofill_icons_.clear();
   autofill_unique_ids_.clear();
 }