sync: Move all the js_* files into a js/ subdirectory.

chrome/browser/sync/js_arg_list.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 CHROME_BROWSER_SYNC_JS_ARG_LIST_H_
-#define CHROME_BROWSER_SYNC_JS_ARG_LIST_H_
-#pragma once
-
-// See README.js for design comments.
-
-#include <string>
-
-#include "base/memory/ref_counted.h"
-#include "base/values.h"
-#include "chrome/browser/sync/shared_value.h"
-
-namespace browser_sync {
-
-// A thread-safe wrapper around an immutable ListValue.  Used for
-// passing around argument lists to different threads.
-class JsArgList {
- public:
-  // Uses an empty argument list.
-  JsArgList();
-
-  // Takes over the data in |args|, leaving |args| empty.
-  explicit JsArgList(ListValue* args);
-
-  ~JsArgList();
-
-  const ListValue& Get() const;
-
-  std::string ToString() const;
-
-  // Copy constructor and assignment operator welcome.
-
- private:
-  scoped_refptr<const SharedValue<ListValue> > args_;
-};
-
-}  // namespace browser_sync
-
-#endif  // CHROME_BROWSER_SYNC_JS_ARG_LIST_H_