Convert the utility process JSON parser into a Mojo service.

chrome/utility/safe_json_parser_handler.cc

-// Copyright 2015 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/utility/safe_json_parser_handler.h"
-
-#include "components/safe_json/safe_json_parser_message_filter.h"
-
-SafeJsonParserHandler::SafeJsonParserHandler()
-    : handler_(new safe_json::SafeJsonParserMessageFilter) {
-}
-
-SafeJsonParserHandler::~SafeJsonParserHandler() {
-}
-
-bool SafeJsonParserHandler::OnMessageReceived(const IPC::Message& message) {
-  return handler_->OnMessageReceived(message);
-}