Move password_form_conversion_utils out of //content into //autofill.

content/public/renderer/password_form_conversion_utils.h

-// 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.
-
-#ifndef CONTENT_PUBLIC_RENDERER_PASSWORD_FORM_CONVERSION_UTILS_H_
-#define CONTENT_PUBLIC_RENDERER_PASSWORD_FORM_CONVERSION_UTILS_H_
-
-#include "base/memory/scoped_ptr.h"
-#include "content/common/content_export.h"
-
-namespace WebKit {
-class WebFormElement;
-}
-
-namespace content {
-
-struct PasswordForm;
-
-// Create a PasswordForm from DOM form. Webkit doesn't allow storing
-// custom metadata to DOM nodes, so we have to do this every time an event
-// happens with a given form and compare against previously Create'd forms
-// to identify..which sucks.
-CONTENT_EXPORT scoped_ptr<PasswordForm> CreatePasswordForm(
-    const WebKit::WebFormElement& form);
-
-}  // namespace content
-
-#endif  // CONTENT_PUBLIC_RENDERER_PASSWORD_FORM_CONVERSION_UTILS_H__