Remove Sync JS generic request/reply framework

sync/js/js_arg_list.cc

Index: sync/js/js_arg_list.cc
diff --git a/sync/js/js_arg_list.cc b/sync/js/js_arg_list.cc
deleted file mode 100644
index e3317e5f574d81beffc6b3b5bd401d43f1be05b4..0000000000000000000000000000000000000000
--- a/sync/js/js_arg_list.cc
+++ /dev/null
@@ -1,27 +0,0 @@
-// 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 "sync/js/js_arg_list.h"
-
-#include "base/json/json_writer.h"
-
-namespace syncer {
-
-JsArgList::JsArgList() {}
-
-JsArgList::JsArgList(base::ListValue* args) : args_(args) {}
-
-JsArgList::~JsArgList() {}
-
-const base::ListValue& JsArgList::Get() const {
-  return args_.Get();
-}
-
-std::string JsArgList::ToString() const {
-  std::string str;
-  base::JSONWriter::Write(&Get(), &str);
-  return str;
-}
-
-}  // namespace syncer