Update Chromoting to use /third_party/closure_compiler.

remoting/webapp/js_proto/console_proto.js

-// 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.
-
-/**
- * @fileoverview Definitions for console logging.
- * @externs
- */
-
-/** @type {Object} */
-var console = {};
-
-/**
- * @param {...*} var_args The message(s) to log.
- * @return {void} Nothing.
- */
-console.log = function(var_args) {};
-
-/**
- * @param {...*} var_args The message(s) to log.
- * @return {void} Nothing.
- */
-console.error = function(var_args) {};
-
-/**
- * @param {...*} var_args The message(s) to log.
- * @return {void} Nothing.
- */
-console.warn = function(var_args) {};