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// 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.
/**
* @fileoverview Provides a countdown-based timer interface.
*/
'use strict';
/**
* A countdown timer.
* @interface
*/
function Countdown() {}
/**
* Sets a new timeout for this timer.
* @param {number} timeoutMillis how long, in milliseconds, the countdown lasts.
* @param {Function=} cb called back when the countdown expires.
* @return {boolean} whether the timeout could be set.
*/
Countdown.prototype.setTimeout = function(timeoutMillis, cb) {};
/** Clears this timer's timeout. Timers that are cleared become expired. */
Countdown.prototype.clearTimeout = function() {};
/**
* @return {number} how many milliseconds are remaining until the timer expires.
*/
Countdown.prototype.millisecondsUntilExpired = function() {};
/** @return {boolean} whether the timer has expired. */
Countdown.prototype.expired = function() {};
/**
* Constructs a new clone of this timer, while overriding its callback.
* @param {Function=} cb callback for new timer.
* @return {!Countdown} new clone.
*/
Countdown.prototype.clone = function(cb) {};
/**
* A factory to create countdown timers.
* @interface
*/
function CountdownFactory() {}
/**
* Creates a new timer.
* @param {number} timeoutMillis How long, in milliseconds, the countdown lasts.
* @param {function()=} opt_cb Called back when the countdown expires.
* @return {!Countdown} The timer.
*/
CountdownFactory.prototype.createTimer = function(timeoutMillis, opt_cb) {};
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