15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2011 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "chrome/renderer/playback_extension.h" 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "v8/include/v8.h" 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const char kPlaybackExtensionName[] = "v8/PlaybackMode"; 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace extensions_v8 { 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)v8::Extension* PlaybackExtension::Get() { 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) v8::Extension* extension = new v8::Extension( 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) kPlaybackExtensionName, 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) "(function () {" 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) " var orig_date = Date;" 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) " var x = 0;" 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) " var time_seed = 1204251968254;" 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) " Math.random = function() {" 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) " x += .1;" 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) " return (x % 1);" 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) " };" 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) " Date = function() {" 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) " if (this instanceof Date) {" 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) " switch (arguments.length) {" 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) " case 0: return new orig_date(time_seed += 50);" 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) " case 1: return new orig_date(arguments[0]);" 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) " default: return new orig_date(arguments[0], arguments[1]," 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) " arguments.length >= 3 ? arguments[2] : 1," 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) " arguments.length >= 4 ? arguments[3] : 0," 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) " arguments.length >= 5 ? arguments[4] : 0," 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) " arguments.length >= 6 ? arguments[5] : 0," 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) " arguments.length >= 7 ? arguments[6] : 0);" 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) " }" 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) " }" 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) " return new Date().toString();" 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) " };" 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) " Date.__proto__ = orig_date;" 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) " Date.prototype.constructor = Date;" 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) " orig_date.now = function() {" 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) " return new Date().getTime();" 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) " };" 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) "})()"); 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return extension; 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace extensions_v8 49