Revert of Convert the utility process JSON parser into a Mojo service.

components/safe_json/safe_json_parser_message_filter.cc

Index: components/safe_json/safe_json_parser_message_filter.cc
diff --git a/components/safe_json/safe_json_parser_message_filter.cc b/components/safe_json/safe_json_parser_message_filter.cc
new file mode 100644
index 0000000000000000000000000000000000000000..5c61ca5699ddad95a763fa355525785df68bf227
--- /dev/null
+++ b/components/safe_json/safe_json_parser_message_filter.cc
@@ -0,0 +1,58 @@
+// 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 "components/safe_json/safe_json_parser_message_filter.h"
+
+#include <memory>
+#include <utility>
+
+#include "base/json/json_reader.h"
+#include "base/values.h"
+#include "components/safe_json/safe_json_parser_messages.h"
+#include "content/public/utility/utility_thread.h"
+#include "ipc/ipc_message.h"
+
+namespace {
+
+bool Send(IPC::Message* message) {
+  return content::UtilityThread::Get()->Send(message);
+}
+
+}  // namespace
+
+namespace safe_json {
+
+SafeJsonParserMessageFilter::SafeJsonParserMessageFilter() {
+}
+SafeJsonParserMessageFilter::~SafeJsonParserMessageFilter() {
+}
+
+bool SafeJsonParserMessageFilter::OnMessageReceived(
+    const IPC::Message& message) {
+  bool handled = true;
+  IPC_BEGIN_MESSAGE_MAP(SafeJsonParserMessageFilter, message)
+    IPC_MESSAGE_HANDLER(SafeJsonParserMsg_ParseJSON, OnParseJSON)
+    IPC_MESSAGE_UNHANDLED(handled = false)
+  IPC_END_MESSAGE_MAP()
+
+  return handled;
+}
+
+void SafeJsonParserMessageFilter::OnParseJSON(const std::string& json) {
+  int error_code;
+  std::string error;
+  std::unique_ptr<base::Value> value = base::JSONReader::ReadAndReturnError(
+      json, base::JSON_PARSE_RFC, &error_code, &error);
+  if (value) {
+    base::ListValue wrapper;
+    wrapper.Append(std::move(value));
+    Send(new SafeJsonParserHostMsg_ParseJSON_Succeeded(wrapper));
+  } else {
+    Send(new SafeJsonParserHostMsg_ParseJSON_Failed(error));
+  }
+
+  content::UtilityThread::Get()->ReleaseProcessIfNeeded();
+}
+
+}  // namespace safe_json