Remove tools/playback_benchmark.

tools/playback_benchmark/playback.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 Playback agent.
- */
-
-var Benchmark = Benchmark || {};
-
-/**
- * Playback agent class.
- * @param {Object} data Test data.
- * @constructor
- */
-Benchmark.Agent = function(data) {
-  this.timeline = data.timeline;
-  this.timelinePosition = 0;
-  this.steps = data.steps;
-  this.stepsPosition = 0;
-  this.randoms = data.randoms;
-  this.randomsPosition = 0;
-  this.ticks = data.ticks;
-  this.ticksPosition = 0;
-  this.delayedScriptElements = {};
-  this.callStackDepth = 0;
-  document.cookie = data.cookie;
-  if (window.innerWidth != data.width || window.innerHeight != data.height) {
-    Benchmark.die('Wrong window size: ' +
-                  window.innerWidth + 'x' + window.innerHeight +
-                  ' instead of ' + data.width + 'x' + data.height);
-  }
-  this.startTime = Benchmark.originals.Date.now();
-};
-
-/**
- * Returns current timeline event.
- * @return {Object} Event.
- */
-Benchmark.Agent.prototype.getCurrentEvent = function() {
-  return this.timeline[this.timelinePosition];
-};
-
-/**
- * Returns next recorded event in timeline. If event is the last event in
- * timeline, posts test results to driver.
- * @param {Object} event Event that actually happened, should correspond to
- * the recorded one (used for debug only).
- * @return {Object} Recorded event from timeline.
- */
-Benchmark.Agent.prototype.getNextEvent = function(event) {
-  var recordedEvent = this.getCurrentEvent();
-  this.ensureEqual(event, recordedEvent);
-  if (event.type == 'random' || event.type == 'ticks') {
-    recordedEvent.count -= 1;
-    if (recordedEvent.count == 0) {
-      this.timelinePosition += 1;
-    }
-  } else {
-    this.timelinePosition += 1;
-  }
-  if (this.timelinePosition == this.steps[this.stepsPosition][1]) {
-    var score = Benchmark.originals.Date.now() - this.startTime;
-    Benchmark.reportScore(score);
-  }
-  return recordedEvent;
-};
-
-/**
- * Checks if two events can be considered equal. Throws exception if events
- * differ.
- * @param {Object} event Event that actually happened.
- * @param {Object} recordedEvent Event taken from timeline.
- */
-Benchmark.Agent.prototype.ensureEqual = function(event, recordedEvent) {
-  var equal = false;
-  if (event.type == recordedEvent.type &&
-      event.type in Benchmark.eventPropertiesMap) {
-    equal = true;
-    var properties = Benchmark.eventPropertiesMap[event.type];
-    for (var i = 0; i < properties.length && equal; ++i)
-      if (event[properties[i]] != recordedEvent[properties[i]])
-        equal = false;
-  }
-  if (!equal) {
-    Benchmark.die('unexpected event: ' + JSON.stringify(event) +
-                  ' instead of ' + JSON.stringify(recordedEvent));
-  }
-};
-
-/**
- * Gets next event from timeline and returns its identifier.
- * @param {Object} event Object with event information.
- * @return {number} Event identifier.
- */
-Benchmark.Agent.prototype.createAsyncEvent = function(event) {
-  return this.getNextEvent(event).id;
-};
-
-/**
- * Stores callback to be invoked according to timeline order.
- * @param {number} eventId 'Parent' event identifier.
- * @param {function} callback Callback.
- */
-Benchmark.Agent.prototype.fireAsyncEvent = function(eventId, callback) {
-  var event = this.timeline[eventId];
-  if (!event.callbackReference) return;
-  this.timeline[event.callbackReference].callback = callback;
-  this.fireSome();
-};
-
-/**
- * Ensures that things are happening according to recorded timeline.
- * @param {number} eventId Identifier of cancelled event.
- */
-Benchmark.Agent.prototype.cancelAsyncEvent = function(eventId) {
-  this.getNextEvent({type: 'cancel', reference: eventId});
-};
-
-/**
- * Checks if script isn't going to be executed too early and delays script
- * execution if necessary.
- * @param {number} scriptId Unique script identifier.
- * @param {HTMLElement} doc Document element.
- * @param {boolean} inlined Indicates whether script is a text block in the page
- * or resides in a separate file.
- * @param {string} src Script url (if script is not inlined).
- */
-Benchmark.Agent.prototype.readyToExecuteScript = function(scriptId, doc,
-                                                          inlined, src) {
-  var event = this.getCurrentEvent();
-  if (event.type == 'willExecuteScript' && event.scriptId == scriptId) {
-    this.timelinePosition += 1;
-    return true;
-  }
-  var element;
-  var elements = doc.getElementsByTagName('script');
-  for (var i = 0, el; (el = elements[i]) && !element; ++i) {
-    if (inlined) {
-      if (el.src) continue;
-      var text = el.textContent;
-      if (scriptId == text.substring(2, text.indexOf("*/")))
-        element = elements[i];
-    } else {
-      if (!el.src) continue;
-      if (el.src.indexOf(src) != -1 || src.indexOf(el.src) != -1) {
-        element = el;
-      }
-    }
-  }
-  if (!element) {
-    Benchmark.die('script element not found', scriptId, src);
-  }
-  for (var el2 = element; el2; el2 = el2.parentElement) {
-    if (el2.onload) {
-      console.log('found', el2);
-    }
-  }
-  this.delayedScriptElements[scriptId] = element;
-  return false;
-};
-
-/**
- * Ensures that things are happening according to recorded timeline.
- * @param {Object} event Object with event information.
- */
-Benchmark.Agent.prototype.didExecuteScript = function(scriptId ) {
-  this.getNextEvent({type: 'didExecuteScript', scriptId: scriptId});
-  this.fireSome();
-};
-
-/**
- * Invokes async events' callbacks according to timeline order.
- */
-Benchmark.Agent.prototype.fireSome = function() {
-  while (this.timelinePosition < this.timeline.length) {
-    var event = this.getCurrentEvent();
-    if (event.type == 'willFire') {
-      if(!event.callback) break;
-      this.timelinePosition += 1;
-      this.callStackDepth += 1;
-      event.callback();
-      this.callStackDepth -= 1;
-      this.getNextEvent({type: 'didFire', reference: event.reference});
-    } else if (event.type == 'willExecuteScript') {
-      if (event.scriptId in this.delayedScriptElements) {
-        var element = this.delayedScriptElements[event.scriptId];
-        var parent = element.parentElement;
-        var cloneElement = element.cloneNode();
-        delete this.delayedScriptElements[event.scriptId];
-        parent.replaceChild(cloneElement, element);
-      }
-      break;
-    } else if (this.callStackDepth > 0) {
-      break;
-    } else {
-      Benchmark.die('unexpected event in fireSome:' + JSON.stringify(event));
-    }
-  }
-};
-
-/**
- * Returns recorded random.
- * @return {number} Recorded random.
- */
-Benchmark.Agent.prototype.random = function() {
-  this.getNextEvent({type: 'random'});
-  return this.randoms[this.randomsPosition++];
-};
-
-/**
- * Returns recorded ticks.
- * @return {number} Recorded ticks.
- */
-Benchmark.Agent.prototype.dateNow = function(event) {
-  this.getNextEvent({type: 'ticks'});
-  return this.ticks[this.ticksPosition++];
-};
-
-/**
- * Event type -> property list mapping used for matching events.
- * @const
- */
-Benchmark.eventPropertiesMap = {
-  'timeout': ['timeout'],
-  'request': ['url'],
-  'addEventListener': ['eventType'],
-  'script load': ['src'],
-  'willExecuteScript': ['scriptId'],
-  'didExecuteScript': ['scriptId'],
-  'willFire': ['reference'],
-  'didFire': ['reference'],
-  'cancel': ['reference'],
-  'random': [],
-  'ticks': []
-};
-
-/**
- * Agent used by native window functions wrappers.
- */
-Benchmark.agent = new Benchmark.Agent(Benchmark.data);
-
-/**
- * Playback flag.
- * @const
- */
-Benchmark.playback = true;
-
-Benchmark.reportScore = function(score) {
-  Benchmark.score = score;
-};
-
-Benchmark.originals.addEventListenerToWindow.call(
-    window, 'message', function(event) {
-      if (Benchmark.score) {
-        event.source.postMessage(Benchmark.score, event.origin);
-      }
-    }, false);