Remove sky/benchmarks

These benchmarks are very out-dated. In fact, they're still written in
JavaScript and mostly test the performance of the DOM.

TBR=eseidel@chromium.org

Review URL: https://codereview.chromium.org/1216823002.

benchmarks/dom/creation.sky

-<sky>
-<import src="../resources/runner.sky" as="PerfRunner" />
-<script>
-var sky = document.querySelector("sky");
-
-var widgets = 0;
-var basicElements = 0;
-var texts = 0;
-
-var WidgetPrototype = Object.create(HTMLElement.prototype);
-WidgetPrototype.createdCallback =  function() {
-  widgets++;
-  this.wasCreated = true;
-  this.wasAttached = false;
-  this.wasDetached = false;
-  this.attrsChanged = [];
-  this.ensureShadowRoot();
-};
-
-WidgetPrototype.attachedCallback = function() {
-  this.wasAttached = true;
-};
-
-WidgetPrototype.detachedCallback = function() {
-  this.wasDetached = true;
-};
-
-WidgetPrototype.attributeChangedCallback = function(name, oldValue, newValue) {
-  this.attrsChanged.push({
-    name: name,
-    oldValue: oldValue,
-    newValue: newValue,
-  });
-};
-
-var Widget = document.registerElement("x-widget", {
-  prototype: WidgetPrototype,
-});
-
-function createElement(tagName) {
-  basicElements++;
-  return document.createElement(tagName);
-}
-
-function createText(text) {
-  texts++;
-  return new Text(text);
-}
-
-function createElements(root, depth) {
-  for (var i = 0; i < 4; i++) {
-    var div = createElement("div");
-    var span1 = div.appendChild(createElement("span"));
-    span1.appendChild(createText("foo"));
-    span1.setAttribute("id", "span" + (i * depth));
-    div.appendChild(createText(" "));
-    div.setAttribute("class", "b" + i + " a" + i);
-    var span2 = div.appendChild(createElement("span"));
-    span2.appendChild(createText("bar"));
-    var widget = span2.appendChild(new Widget());
-    widget.setAttribute("id", "widget-" + (i * depth));
-    widget.setAttribute("custom", "example attribute");
-    widget.setAttribute("custom2", "example attribute2");
-    root.appendChild(div);
-    if (depth)
-      createElements(widget.shadowRoot, depth - 1);
-  }
-}
-
-var runner = new PerfRunner({
-  setup: function() {
-    widgets = 0;
-    basicElements = 0;
-    texts = 0;
-  },
-  iterations: 10,
-  unit: "ms",
-});
-
-runner.runAsync(function(done) {
-  var root = createElement("div");
-  sky.appendChild(root);
-  createElements(root, 3);
-  root.remove();
-  // console.log("widgets: " + widgets);
-  // console.log("basic elements: " + basicElements);
-  // console.log("texts: " + texts);
-  // CONSOLE: LOG: widgets: 340
-  // CONSOLE: LOG: basic elements: 1021
-  // CONSOLE: LOG: texts: 1020
-  done();
-});
-</script>
-</sky>

benchmarks/layout/simple-blocks.sky

-<sky>
-<import src="../resources/runner.sky" as="PerfRunner" />
-<style>
-div {
-  height: 10px;
-}
-span {
-  display: inline;
-}
-</style>
-<div id='content'></div>
-<script>
-var content = document.getElementById('content');
-
-var out = [];
-for (var i = 0; i < 1000; i++) {
-  var div = document.createElement('div');
-  div.appendChild(document.createElement('span')).appendChild(new Text('foo'));
-  div.appendChild(new Text(' '));
-  div.appendChild(document.createElement('span')).appendChild(new Text('bar'));
-  content.appendChild(div);
-}
-
-var b = document.querySelector('sky');
-
-var runner = new PerfRunner({
-  setup: function() {
-    b.style.width = '210px';
-    getComputedStyle(b).color;
-    b.offsetHeight;
-
-    b.style.width = '200px';
-    getComputedStyle(b).color;
-  },
-  iterations: 10,
-  unit: 'ms',
-});
-
-runner.runAsync(function(done) {
-  b.offsetHeight;
-  done();
-});
-</script>
-</sky>

benchmarks/parser/parser.sky

-<import src="../resources/runner.sky" as="PerfRunner" />
-<script>
-var specURL = "resources/html5.html";
-var cacheBust = 100;
-
-var runner = new PerfRunner({
-  iterations: 10,
-  unit: 'ms',
-});
-
-runner.runAsync(function(done) {
-  var element = document.createElement("import");
-
-  element.addEventListener("load", function() {
-    element.remove();
-    done();
-  });
-
-  element.setAttribute("src", specURL + "?cacheBust=" + cacheBust++);
-  document.documentElement.appendChild(element);
-});
-</script>

benchmarks/resources/fakesky.dart

-import 'dart:async';
-
-void assertHasParentNode(Node n) { assert(n.parentNode != null); }
-void assertHasParentNodes(List<Node> list) {
-  for (var n in list) {
-    assertHasParentNode(n);
-  }
-}
-
-class Node {
-
-  ParentNode parentNode;
-  Node nextSibling;
-  Node previousSibling;
-  Node();
-
-  void insertBefore(List<Node> nodes) {
-    int count = nodes.length;
-    while (count-- > 0) {
-      parentNode._insertBefore(nodes[count], this);
-    }
-
-    assertHasParentNodes(nodes);
-  }
-
-  remove() {
-    if (parentNode == null) {
-      return;
-    }
-
-    if (nextSibling != null) {
-      nextSibling.previousSibling = previousSibling;
-    } else {
-      parentNode.lastChild = previousSibling;
-    }
-
-    if (previousSibling != null) {
-      previousSibling.nextSibling = nextSibling;
-    } else {
-      parentNode.firstChild = nextSibling;
-    }
-
-    parentNode = null;
-    nextSibling = null;
-    previousSibling = null;
-  }
-}
-
-class Text extends Node {
-  String data;
-  Text(this.data) : super();
-}
-
-class ParentNode extends Node {
-  Node firstChild;
-  Node lastChild;
-
-  ParentNode() : super();
-
-  Node setChild(Node node) {
-    firstChild = node;
-    lastChild = node;
-    node.parentNode = this;
-    assertHasParentNode(node);
-    return node;
-  }
-
-  Node _insertBefore(Node node, Node ref) {
-    assert(ref == null || ref.parentNode == this);
-
-    if (node.parentNode != null) {
-      node.remove();
-    }
-
-    node.parentNode = this;
-
-    if (firstChild == null && lastChild == null) {
-      firstChild = node;
-      lastChild = node;
-    } else if (ref == null) {
-      node.previousSibling = lastChild;
-      lastChild.nextSibling = node;
-      lastChild = node;
-    } else {
-      if (ref == firstChild) {
-        assert(ref.previousSibling == null);
-        firstChild = node;
-      }
-      node.previousSibling = ref.previousSibling;
-      ref.previousSibling = node;
-      node.nextSibling = ref;
-    }
-
-    assertHasParentNode(node);
-    return node;
-  }
-
-  Node appendChild(Node node) {
-    return _insertBefore(node, null);
-  }
-}
-
-class Element extends ParentNode {
-  void addEventListener(String type, EventListener listener, [bool useCapture = false]) {}
-  void removeEventListener(String type, EventListener listener) {}
-  void setAttribute(String name, [String value]) {}
-}
-
-class Document extends ParentNode {
-  Document();
-  Element createElement(String tagName) {
-    switch (tagName) {
-      case 'img' : return new HTMLImageElement();
-      default : return new Element();
-    }
-  }
-}
-
-class HTMLImageElement extends Element {
-  HTMLImageElement();
-  String src;
-  Object style = {};
-}
-
-class Event {}
-
-class PointerEvent extends Event {}
-class GestureEvent extends Event {}
-class WheelEvent extends Event {}
-
-typedef EventListener(Event event);
-
-void _callRAF(Function fn) {
-  fn(new DateTime.now().millisecondsSinceEpoch.toDouble());
-}
-
-class Window {
-  int requestAnimationFrame(Function fn) {
-    new Timer(const Duration(milliseconds: 16), () {
-      _callRAF(fn);
-    });
-    return 1;
-  }
-
-  void cancelAnimationFrame(int id) {
-  }
-}
-
-Document document = new Document();
-
-Window window = new Window();
-
-class ClientRect {
-    double top;
-    double right;
-    double bottomr;
-    double left;
-    double width;
-    double height;
-}

benchmarks/resources/runner.sky

-<script>
-function PerfRunner(options) {
-  this.unit_ = options.unit || "ms";
-  this.iterationsRemaining_ = options.iterations || 10;
-  this.results_ = [];
-  this.setup_ = options.setup;
-  this.logLines_ = [];
-}
-
-PerfRunner.prototype.log = function(line) {
-  this.logLines_.push(line);
-};
-
-PerfRunner.prototype.recordResult = function(result) {
-  this.results_.push(result);
-};
-
-PerfRunner.prototype.runAsync = function(test) {
-  var self = this;
-  window.setTimeout(function() {
-    if (self.setup_) {
-      var setup = self.setup_;
-      setup();
-    }
-
-    var startTime = Date.now();
-    test(function() {
-      var endTime = Date.now();
-
-      self.recordResult(endTime - startTime);
-      if (--self.iterationsRemaining_ > 0)
-        self.runAsync(test);
-      else
-        self.finish();
-    });
-  });
-};
-
-PerfRunner.prototype.computeStatistics = function() {
-  var data = this.results_.slice();
-
-  // Add values from the smallest to the largest to avoid the loss of significance
-  data.sort(function(a, b) { return a - b; });
-
-  var middle = Math.floor(data.length / 2);
-  var stats = {
-    min: data[0],
-    max: data[data.length - 1],
-    median: data.length % 2 ? data[middle] : (data[middle - 1] + data[middle]) / 2,
-  };
-
-  // Compute the mean and variance using Knuth's online algorithm (has good numerical stability).
-  var squareSum = 0;
-  stats.values = this.results_;
-  stats.mean = 0;
-  for (var i = 0; i < data.length; ++i) {
-      var x = data[i];
-      var delta = x - stats.mean;
-      var sweep = i + 1.0;
-      stats.mean += delta / sweep;
-      squareSum += delta * (x - stats.mean);
-  }
-  stats.variance = data.length <= 1 ? 0 : squareSum / (data.length - 1);
-  stats.stdev = Math.sqrt(stats.variance);
-  stats.unit = this.unit_;
-
-  return stats;
-};
-
-PerfRunner.prototype.logStatistics = function(title) {
-  var stats = this.computeStatistics();
-  this.log("");
-  this.log(title);
-  if (stats.values)
-    this.log("values " + stats.values.join(", ") + " " + stats.unit);
-  this.log("avg " + stats.mean + " " + stats.unit);
-  this.log("median " + stats.median + " " + stats.unit);
-  this.log("stdev " + stats.stdev + " " + stats.unit);
-  this.log("min " + stats.min + " " + stats.unit);
-  this.log("max " + stats.max + " " + stats.unit);
-};
-
-PerfRunner.prototype.finish = function () {
-  this.logStatistics("Time:");
-  internals.notifyTestComplete(this.logLines_.join('\n'));
-}
-
-module.exports = PerfRunner;
-</script>