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

chrome/renderer/autofill/autofill_renderer_browsertest.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 "base/utf_string_conversions.h"
 #include "chrome/common/autofill_messages.h"
 #include "chrome/common/form_data.h"
 #include "chrome/common/form_field_data.h"
 #include "chrome/test/base/chrome_render_view_test.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 46 matching lines @@
 
   expected.name = ASCIIToUTF16("middlename");
   expected.value = string16();
   expected.form_control_type = ASCIIToUTF16("text");
   expected.max_length = WebInputElement::defaultMaxLength();
   EXPECT_FORM_FIELD_DATA_EQUALS(expected, forms[0].fields[1]);
 
   expected.name = ASCIIToUTF16("lastname");
   expected.value = string16();
   expected.form_control_type = ASCIIToUTF16("text");
+  expected.autocomplete_attribute = ASCIIToUTF16("off");
   expected.max_length = WebInputElement::defaultMaxLength();
   EXPECT_FORM_FIELD_DATA_EQUALS(expected, forms[0].fields[2]);
+  expected.autocomplete_attribute = string16();  // reset
 
   expected.name = ASCIIToUTF16("state");
   expected.value = ASCIIToUTF16("?");
   expected.form_control_type = ASCIIToUTF16("select-one");
   expected.max_length = 0;
   EXPECT_FORM_FIELD_DATA_EQUALS(expected, forms[0].fields[3]);
 
   // Verify that |didAcceptAutofillSuggestion()| sends the expected number of
   // fields.
   WebFrame* web_frame = GetMainFrame();
@@ skipping 86 matching lines @@
   const IPC::Message* message2 =
       render_thread_->sink().GetUniqueMessageMatching(
           AutofillHostMsg_FillAutofillFormData::ID);
 
   // No message should be sent in this case.  |firstname| is filled directly.
   ASSERT_EQ(static_cast<IPC::Message*>(NULL), message2);
   EXPECT_EQ(firstname.value(), WebKit::WebString::fromUTF8("David"));
 }
 
 }  // namespace autofill