Revert of [DevTools] Extract platform module.

Source/devtools/front_end/platform/Promise.js

-// Copyright 2014 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.
-
-/**
- * @param {string} error
- * @return {!Promise.<T>}
- * @template T
- */
-Promise.rejectWithError = function(error)
-{
-    return Promise.reject(new Error(error));
-}
-
-/**
- * @param {function((T|undefined))} callback
- * @return {!Promise.<T>}
- * @template T
- */
-Promise.prototype.thenOrCatch = function(callback)
-{
-    return this.then(callback, reject.bind(this));
-
-    /**
-     * @param {*} e
-     * @this {Promise}
-     */
-    function reject(e)
-    {
-        this._reportError(e);
-        callback(undefined);
-    }
-}
-
-Promise.prototype.done = function()
-{
-    this.catchAndReport();
-}
-
-/**
- * @return {!Promise}
- */
-Promise.prototype.catchAndReport = function()
-{
-    return this.catch(this._reportError.bind(this));
-}
-
-/**
- * @param {*} e
- */
-Promise.prototype._reportError = function(e)
-{
-    if (e instanceof Error)
-        console.error(e.stack);
-    else
-        console.error(e);
-}