Move indexeddb code to its own directory inside of content/{browser,common,renderer}

content/common/indexed_db_param_traits.h

-// Copyright (c) 2010 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_COMMON_INDEXED_DB_PARAM_TRAITS_H_
-#define CONTENT_COMMON_INDEXED_DB_PARAM_TRAITS_H_
-#pragma once
-
-#include "ipc/ipc_message.h"
-#include "ipc/ipc_param_traits.h"
-
-class IndexedDBKey;
-
-namespace content {
-class SerializedScriptValue;
-}
-
-namespace IPC {
-
-// These datatypes are used by utility_messages.h and render_messages.h.
-// Unfortunately we can't move it to common: MSVC linker complains about
-// WebKit datatypes that are not linked on npchrome_frame (even though it's
-// never actually used by that target).
-
-template <>
-struct ParamTraits<content::SerializedScriptValue> {
-  typedef content::SerializedScriptValue param_type;
-  static void Write(Message* m, const param_type& p);
-  static bool Read(const Message* m, void** iter, param_type* r);
-  static void Log(const param_type& p, std::string* l);
-};
-
-template <>
-struct ParamTraits<IndexedDBKey> {
-  typedef IndexedDBKey param_type;
-  static void Write(Message* m, const param_type& p);
-  static bool Read(const Message* m, void** iter, param_type* r);
-  static void Log(const param_type& p, std::string* l);
-};
-
-} // namespace IPC
-
-#endif  // CONTENT_COMMON_INDEXED_DB_PARAM_TRAITS_H_