Removed Polymer from Observatory deps

packages/web_components/lib/ShadowDOM.js

+/**
+ * @license
+ * Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
+ * This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
+ * The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
+ * The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
+ * Code distributed by Google as part of the polymer project is also
+ * subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
+ */
+// @version 0.7.21
+if (typeof WeakMap === "undefined") {
+  (function() {
+    var defineProperty = Object.defineProperty;
+    var counter = Date.now() % 1e9;
+    var WeakMap = function() {
+      this.name = "__st" + (Math.random() * 1e9 >>> 0) + (counter++ + "__");
+    };
+    WeakMap.prototype = {
+      set: function(key, value) {
+        var entry = key[this.name];
+        if (entry && entry[0] === key) entry[1] = value; else defineProperty(key, this.name, {
+          value: [ key, value ],
+          writable: true
+        });
+        return this;
+      },
+      get: function(key) {
+        var entry;
+        return (entry = key[this.name]) && entry[0] === key ? entry[1] : undefined;
+      },
+      "delete": function(key) {
+        var entry = key[this.name];
+        if (!entry || entry[0] !== key) return false;
+        entry[0] = entry[1] = undefined;
+        return true;
+      },
+      has: function(key) {
+        var entry = key[this.name];
+        if (!entry) return false;
+        return entry[0] === key;
+      }
+    };
+    window.WeakMap = WeakMap;
+  })();
+}
+
+window.ShadowDOMPolyfill = {};
+
+(function(scope) {
+  "use strict";
+  var constructorTable = new WeakMap();
+  var nativePrototypeTable = new WeakMap();
+  var wrappers = Object.create(null);
+  function detectEval() {
+    if (typeof chrome !== "undefined" && chrome.app && chrome.app.runtime) {
+      return false;
+    }
+    if (navigator.getDeviceStorage) {
+      return false;
+    }
+    try {
+      var f = new Function("return true;");
+      return f();
+    } catch (ex) {
+      return false;
+    }
+  }
+  var hasEval = detectEval();
+  function assert(b) {
+    if (!b) throw new Error("Assertion failed");
+  }
+  var defineProperty = Object.defineProperty;
+  var getOwnPropertyNames = Object.getOwnPropertyNames;
+  var getOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;
+  function mixin(to, from) {
+    var names = getOwnPropertyNames(from);
+    for (var i = 0; i < names.length; i++) {
+      var name = names[i];
+      defineProperty(to, name, getOwnPropertyDescriptor(from, name));
+    }
+    return to;
+  }
+  function mixinStatics(to, from) {
+    var names = getOwnPropertyNames(from);
+    for (var i = 0; i < names.length; i++) {
+      var name = names[i];
+      switch (name) {
+       case "arguments":
+       case "caller":
+       case "length":
+       case "name":
+       case "prototype":
+       case "toString":
+        continue;
+      }
+      defineProperty(to, name, getOwnPropertyDescriptor(from, name));
+    }
+    return to;
+  }
+  function oneOf(object, propertyNames) {
+    for (var i = 0; i < propertyNames.length; i++) {
+      if (propertyNames[i] in object) return propertyNames[i];
+    }
+  }
+  var nonEnumerableDataDescriptor = {
+    value: undefined,
+    configurable: true,
+    enumerable: false,
+    writable: true
+  };
+  function defineNonEnumerableDataProperty(object, name, value) {
+    nonEnumerableDataDescriptor.value = value;
+    defineProperty(object, name, nonEnumerableDataDescriptor);
+  }
+  getOwnPropertyNames(window);
+  function getWrapperConstructor(node, opt_instance) {
+    var nativePrototype = node.__proto__ || Object.getPrototypeOf(node);
+    if (isFirefox) {
+      try {
+        getOwnPropertyNames(nativePrototype);
+      } catch (error) {
+        nativePrototype = nativePrototype.__proto__;
+      }
+    }
+    var wrapperConstructor = constructorTable.get(nativePrototype);
+    if (wrapperConstructor) return wrapperConstructor;
+    var parentWrapperConstructor = getWrapperConstructor(nativePrototype);
+    var GeneratedWrapper = createWrapperConstructor(parentWrapperConstructor);
+    registerInternal(nativePrototype, GeneratedWrapper, opt_instance);
+    return GeneratedWrapper;
+  }
+  function addForwardingProperties(nativePrototype, wrapperPrototype) {
+    installProperty(nativePrototype, wrapperPrototype, true);
+  }
+  function registerInstanceProperties(wrapperPrototype, instanceObject) {
+    installProperty(instanceObject, wrapperPrototype, false);
+  }
+  var isFirefox = /Firefox/.test(navigator.userAgent);
+  var dummyDescriptor = {
+    get: function() {},
+    set: function(v) {},
+    configurable: true,
+    enumerable: true
+  };
+  function isEventHandlerName(name) {
+    return /^on[a-z]+$/.test(name);
+  }
+  function isIdentifierName(name) {
+    return /^[a-zA-Z_$][a-zA-Z_$0-9]*$/.test(name);
+  }
+  function getGetter(name) {
+    return hasEval && isIdentifierName(name) ? new Function("return this.__impl4cf1e782hg__." + name) : function() {
+      return this.__impl4cf1e782hg__[name];
+    };
+  }
+  function getSetter(name) {
+    return hasEval && isIdentifierName(name) ? new Function("v", "this.__impl4cf1e782hg__." + name + " = v") : function(v) {
+      this.__impl4cf1e782hg__[name] = v;
+    };
+  }
+  function getMethod(name) {
+    return hasEval && isIdentifierName(name) ? new Function("return this.__impl4cf1e782hg__." + name + ".apply(this.__impl4cf1e782hg__, arguments)") : function() {
+      return this.__impl4cf1e782hg__[name].apply(this.__impl4cf1e782hg__, arguments);
+    };
+  }
+  function getDescriptor(source, name) {
+    try {
+      return Object.getOwnPropertyDescriptor(source, name);
+    } catch (ex) {
+      return dummyDescriptor;
+    }
+  }
+  var isBrokenSafari = function() {
+    var descr = Object.getOwnPropertyDescriptor(Node.prototype, "nodeType");
+    return descr && !descr.get && !descr.set;
+  }();
+  function installProperty(source, target, allowMethod, opt_blacklist) {
+    var names = getOwnPropertyNames(source);
+    for (var i = 0; i < names.length; i++) {
+      var name = names[i];
+      if (name === "polymerBlackList_") continue;
+      if (name in target) continue;
+      if (source.polymerBlackList_ && source.polymerBlackList_[name]) continue;
+      if (isFirefox) {
+        source.__lookupGetter__(name);
+      }
+      var descriptor = getDescriptor(source, name);
+      var getter, setter;
+      if (typeof descriptor.value === "function") {
+        if (allowMethod) {
+          target[name] = getMethod(name);
+        }
+        continue;
+      }
+      var isEvent = isEventHandlerName(name);
+      if (isEvent) getter = scope.getEventHandlerGetter(name); else getter = getGetter(name);
+      if (descriptor.writable || descriptor.set || isBrokenSafari) {
+        if (isEvent) setter = scope.getEventHandlerSetter(name); else setter = getSetter(name);
+      }
+      var configurable = isBrokenSafari || descriptor.configurable;
+      defineProperty(target, name, {
+        get: getter,
+        set: setter,
+        configurable: configurable,
+        enumerable: descriptor.enumerable
+      });
+    }
+  }
+  function register(nativeConstructor, wrapperConstructor, opt_instance) {
+    if (nativeConstructor == null) {
+      return;
+    }
+    var nativePrototype = nativeConstructor.prototype;
+    registerInternal(nativePrototype, wrapperConstructor, opt_instance);
+    mixinStatics(wrapperConstructor, nativeConstructor);
+  }
+  function registerInternal(nativePrototype, wrapperConstructor, opt_instance) {
+    var wrapperPrototype = wrapperConstructor.prototype;
+    assert(constructorTable.get(nativePrototype) === undefined);
+    constructorTable.set(nativePrototype, wrapperConstructor);
+    nativePrototypeTable.set(wrapperPrototype, nativePrototype);
+    addForwardingProperties(nativePrototype, wrapperPrototype);
+    if (opt_instance) registerInstanceProperties(wrapperPrototype, opt_instance);
+    defineNonEnumerableDataProperty(wrapperPrototype, "constructor", wrapperConstructor);
+    wrapperConstructor.prototype = wrapperPrototype;
+  }
+  function isWrapperFor(wrapperConstructor, nativeConstructor) {
+    return constructorTable.get(nativeConstructor.prototype) === wrapperConstructor;
+  }
+  function registerObject(object) {
+    var nativePrototype = Object.getPrototypeOf(object);
+    var superWrapperConstructor = getWrapperConstructor(nativePrototype);
+    var GeneratedWrapper = createWrapperConstructor(superWrapperConstructor);
+    registerInternal(nativePrototype, GeneratedWrapper, object);
+    return GeneratedWrapper;
+  }
+  function createWrapperConstructor(superWrapperConstructor) {
+    function GeneratedWrapper(node) {
+      superWrapperConstructor.call(this, node);
+    }
+    var p = Object.create(superWrapperConstructor.prototype);
+    p.constructor = GeneratedWrapper;
+    GeneratedWrapper.prototype = p;
+    return GeneratedWrapper;
+  }
+  function isWrapper(object) {
+    return object && object.__impl4cf1e782hg__;
+  }
+  function isNative(object) {
+    return !isWrapper(object);
+  }
+  function wrap(impl) {
+    if (impl === null) return null;
+    assert(isNative(impl));
+    var wrapper = impl.__wrapper8e3dd93a60__;
+    if (wrapper != null) {
+      return wrapper;
+    }
+    return impl.__wrapper8e3dd93a60__ = new (getWrapperConstructor(impl, impl))(impl);
+  }
+  function unwrap(wrapper) {
+    if (wrapper === null) return null;
+    assert(isWrapper(wrapper));
+    return wrapper.__impl4cf1e782hg__;
+  }
+  function unsafeUnwrap(wrapper) {
+    return wrapper.__impl4cf1e782hg__;
+  }
+  function setWrapper(impl, wrapper) {
+    wrapper.__impl4cf1e782hg__ = impl;
+    impl.__wrapper8e3dd93a60__ = wrapper;
+  }
+  function unwrapIfNeeded(object) {
+    return object && isWrapper(object) ? unwrap(object) : object;
+  }
+  function wrapIfNeeded(object) {
+    return object && !isWrapper(object) ? wrap(object) : object;
+  }
+  function rewrap(node, wrapper) {
+    if (wrapper === null) return;
+    assert(isNative(node));
+    assert(wrapper === undefined || isWrapper(wrapper));
+    node.__wrapper8e3dd93a60__ = wrapper;
+  }
+  var getterDescriptor = {
+    get: undefined,
+    configurable: true,
+    enumerable: true
+  };
+  function defineGetter(constructor, name, getter) {
+    getterDescriptor.get = getter;
+    defineProperty(constructor.prototype, name, getterDescriptor);
+  }
+  function defineWrapGetter(constructor, name) {
+    defineGetter(constructor, name, function() {
+      return wrap(this.__impl4cf1e782hg__[name]);
+    });
+  }
+  function forwardMethodsToWrapper(constructors, names) {
+    constructors.forEach(function(constructor) {
+      names.forEach(function(name) {
+        constructor.prototype[name] = function() {
+          var w = wrapIfNeeded(this);
+          return w[name].apply(w, arguments);
+        };
+      });
+    });
+  }
+  scope.addForwardingProperties = addForwardingProperties;
+  scope.assert = assert;
+  scope.constructorTable = constructorTable;
+  scope.defineGetter = defineGetter;
+  scope.defineWrapGetter = defineWrapGetter;
+  scope.forwardMethodsToWrapper = forwardMethodsToWrapper;
+  scope.isIdentifierName = isIdentifierName;
+  scope.isWrapper = isWrapper;
+  scope.isWrapperFor = isWrapperFor;
+  scope.mixin = mixin;
+  scope.nativePrototypeTable = nativePrototypeTable;
+  scope.oneOf = oneOf;
+  scope.registerObject = registerObject;
+  scope.registerWrapper = register;
+  scope.rewrap = rewrap;
+  scope.setWrapper = setWrapper;
+  scope.unsafeUnwrap = unsafeUnwrap;
+  scope.unwrap = unwrap;
+  scope.unwrapIfNeeded = unwrapIfNeeded;
+  scope.wrap = wrap;
+  scope.wrapIfNeeded = wrapIfNeeded;
+  scope.wrappers = wrappers;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  function newSplice(index, removed, addedCount) {
+    return {
+      index: index,
+      removed: removed,
+      addedCount: addedCount
+    };
+  }
+  var EDIT_LEAVE = 0;
+  var EDIT_UPDATE = 1;
+  var EDIT_ADD = 2;
+  var EDIT_DELETE = 3;
+  function ArraySplice() {}
+  ArraySplice.prototype = {
+    calcEditDistances: function(current, currentStart, currentEnd, old, oldStart, oldEnd) {
+      var rowCount = oldEnd - oldStart + 1;
+      var columnCount = currentEnd - currentStart + 1;
+      var distances = new Array(rowCount);
+      for (var i = 0; i < rowCount; i++) {
+        distances[i] = new Array(columnCount);
+        distances[i][0] = i;
+      }
+      for (var j = 0; j < columnCount; j++) distances[0][j] = j;
+      for (var i = 1; i < rowCount; i++) {
+        for (var j = 1; j < columnCount; j++) {
+          if (this.equals(current[currentStart + j - 1], old[oldStart + i - 1])) distances[i][j] = distances[i - 1][j - 1]; else {
+            var north = distances[i - 1][j] + 1;
+            var west = distances[i][j - 1] + 1;
+            distances[i][j] = north < west ? north : west;
+          }
+        }
+      }
+      return distances;
+    },
+    spliceOperationsFromEditDistances: function(distances) {
+      var i = distances.length - 1;
+      var j = distances[0].length - 1;
+      var current = distances[i][j];
+      var edits = [];
+      while (i > 0 || j > 0) {
+        if (i == 0) {
+          edits.push(EDIT_ADD);
+          j--;
+          continue;
+        }
+        if (j == 0) {
+          edits.push(EDIT_DELETE);
+          i--;
+          continue;
+        }
+        var northWest = distances[i - 1][j - 1];
+        var west = distances[i - 1][j];
+        var north = distances[i][j - 1];
+        var min;
+        if (west < north) min = west < northWest ? west : northWest; else min = north < northWest ? north : northWest;
+        if (min == northWest) {
+          if (northWest == current) {
+            edits.push(EDIT_LEAVE);
+          } else {
+            edits.push(EDIT_UPDATE);
+            current = northWest;
+          }
+          i--;
+          j--;
+        } else if (min == west) {
+          edits.push(EDIT_DELETE);
+          i--;
+          current = west;
+        } else {
+          edits.push(EDIT_ADD);
+          j--;
+          current = north;
+        }
+      }
+      edits.reverse();
+      return edits;
+    },
+    calcSplices: function(current, currentStart, currentEnd, old, oldStart, oldEnd) {
+      var prefixCount = 0;
+      var suffixCount = 0;
+      var minLength = Math.min(currentEnd - currentStart, oldEnd - oldStart);
+      if (currentStart == 0 && oldStart == 0) prefixCount = this.sharedPrefix(current, old, minLength);
+      if (currentEnd == current.length && oldEnd == old.length) suffixCount = this.sharedSuffix(current, old, minLength - prefixCount);
+      currentStart += prefixCount;
+      oldStart += prefixCount;
+      currentEnd -= suffixCount;
+      oldEnd -= suffixCount;
+      if (currentEnd - currentStart == 0 && oldEnd - oldStart == 0) return [];
+      if (currentStart == currentEnd) {
+        var splice = newSplice(currentStart, [], 0);
+        while (oldStart < oldEnd) splice.removed.push(old[oldStart++]);
+        return [ splice ];
+      } else if (oldStart == oldEnd) return [ newSplice(currentStart, [], currentEnd - currentStart) ];
+      var ops = this.spliceOperationsFromEditDistances(this.calcEditDistances(current, currentStart, currentEnd, old, oldStart, oldEnd));
+      var splice = undefined;
+      var splices = [];
+      var index = currentStart;
+      var oldIndex = oldStart;
+      for (var i = 0; i < ops.length; i++) {
+        switch (ops[i]) {
+         case EDIT_LEAVE:
+          if (splice) {
+            splices.push(splice);
+            splice = undefined;
+          }
+          index++;
+          oldIndex++;
+          break;
+
+         case EDIT_UPDATE:
+          if (!splice) splice = newSplice(index, [], 0);
+          splice.addedCount++;
+          index++;
+          splice.removed.push(old[oldIndex]);
+          oldIndex++;
+          break;
+
+         case EDIT_ADD:
+          if (!splice) splice = newSplice(index, [], 0);
+          splice.addedCount++;
+          index++;
+          break;
+
+         case EDIT_DELETE:
+          if (!splice) splice = newSplice(index, [], 0);
+          splice.removed.push(old[oldIndex]);
+          oldIndex++;
+          break;
+        }
+      }
+      if (splice) {
+        splices.push(splice);
+      }
+      return splices;
+    },
+    sharedPrefix: function(current, old, searchLength) {
+      for (var i = 0; i < searchLength; i++) if (!this.equals(current[i], old[i])) return i;
+      return searchLength;
+    },
+    sharedSuffix: function(current, old, searchLength) {
+      var index1 = current.length;
+      var index2 = old.length;
+      var count = 0;
+      while (count < searchLength && this.equals(current[--index1], old[--index2])) count++;
+      return count;
+    },
+    calculateSplices: function(current, previous) {
+      return this.calcSplices(current, 0, current.length, previous, 0, previous.length);
+    },
+    equals: function(currentValue, previousValue) {
+      return currentValue === previousValue;
+    }
+  };
+  scope.ArraySplice = ArraySplice;
+})(window.ShadowDOMPolyfill);
+
+(function(context) {
+  "use strict";
+  var OriginalMutationObserver = window.MutationObserver;
+  var callbacks = [];
+  var pending = false;
+  var timerFunc;
+  function handle() {
+    pending = false;
+    var copies = callbacks.slice(0);
+    callbacks = [];
+    for (var i = 0; i < copies.length; i++) {
+      (0, copies[i])();
+    }
+  }
+  if (OriginalMutationObserver) {
+    var counter = 1;
+    var observer = new OriginalMutationObserver(handle);
+    var textNode = document.createTextNode(counter);
+    observer.observe(textNode, {
+      characterData: true
+    });
+    timerFunc = function() {
+      counter = (counter + 1) % 2;
+      textNode.data = counter;
+    };
+  } else {
+    timerFunc = window.setTimeout;
+  }
+  function setEndOfMicrotask(func) {
+    callbacks.push(func);
+    if (pending) return;
+    pending = true;
+    timerFunc(handle, 0);
+  }
+  context.setEndOfMicrotask = setEndOfMicrotask;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var setEndOfMicrotask = scope.setEndOfMicrotask;
+  var wrapIfNeeded = scope.wrapIfNeeded;
+  var wrappers = scope.wrappers;
+  var registrationsTable = new WeakMap();
+  var globalMutationObservers = [];
+  var isScheduled = false;
+  function scheduleCallback(observer) {
+    if (observer.scheduled_) return;
+    observer.scheduled_ = true;
+    globalMutationObservers.push(observer);
+    if (isScheduled) return;
+    setEndOfMicrotask(notifyObservers);
+    isScheduled = true;
+  }
+  function notifyObservers() {
+    isScheduled = false;
+    while (globalMutationObservers.length) {
+      var notifyList = globalMutationObservers;
+      globalMutationObservers = [];
+      notifyList.sort(function(x, y) {
+        return x.uid_ - y.uid_;
+      });
+      for (var i = 0; i < notifyList.length; i++) {
+        var mo = notifyList[i];
+        mo.scheduled_ = false;
+        var queue = mo.takeRecords();
+        removeTransientObserversFor(mo);
+        if (queue.length) {
+          mo.callback_(queue, mo);
+        }
+      }
+    }
+  }
+  function MutationRecord(type, target) {
+    this.type = type;
+    this.target = target;
+    this.addedNodes = new wrappers.NodeList();
+    this.removedNodes = new wrappers.NodeList();
+    this.previousSibling = null;
+    this.nextSibling = null;
+    this.attributeName = null;
+    this.attributeNamespace = null;
+    this.oldValue = null;
+  }
+  function registerTransientObservers(ancestor, node) {
+    for (;ancestor; ancestor = ancestor.parentNode) {
+      var registrations = registrationsTable.get(ancestor);
+      if (!registrations) continue;
+      for (var i = 0; i < registrations.length; i++) {
+        var registration = registrations[i];
+        if (registration.options.subtree) registration.addTransientObserver(node);
+      }
+    }
+  }
+  function removeTransientObserversFor(observer) {
+    for (var i = 0; i < observer.nodes_.length; i++) {
+      var node = observer.nodes_[i];
+      var registrations = registrationsTable.get(node);
+      if (!registrations) return;
+      for (var j = 0; j < registrations.length; j++) {
+        var registration = registrations[j];
+        if (registration.observer === observer) registration.removeTransientObservers();
+      }
+    }
+  }
+  function enqueueMutation(target, type, data) {
+    var interestedObservers = Object.create(null);
+    var associatedStrings = Object.create(null);
+    for (var node = target; node; node = node.parentNode) {
+      var registrations = registrationsTable.get(node);
+      if (!registrations) continue;
+      for (var j = 0; j < registrations.length; j++) {
+        var registration = registrations[j];
+        var options = registration.options;
+        if (node !== target && !options.subtree) continue;
+        if (type === "attributes" && !options.attributes) continue;
+        if (type === "attributes" && options.attributeFilter && (data.namespace !== null || options.attributeFilter.indexOf(data.name) === -1)) {
+          continue;
+        }
+        if (type === "characterData" && !options.characterData) continue;
+        if (type === "childList" && !options.childList) continue;
+        var observer = registration.observer;
+        interestedObservers[observer.uid_] = observer;
+        if (type === "attributes" && options.attributeOldValue || type === "characterData" && options.characterDataOldValue) {
+          associatedStrings[observer.uid_] = data.oldValue;
+        }
+      }
+    }
+    for (var uid in interestedObservers) {
+      var observer = interestedObservers[uid];
+      var record = new MutationRecord(type, target);
+      if ("name" in data && "namespace" in data) {
+        record.attributeName = data.name;
+        record.attributeNamespace = data.namespace;
+      }
+      if (data.addedNodes) record.addedNodes = data.addedNodes;
+      if (data.removedNodes) record.removedNodes = data.removedNodes;
+      if (data.previousSibling) record.previousSibling = data.previousSibling;
+      if (data.nextSibling) record.nextSibling = data.nextSibling;
+      if (associatedStrings[uid] !== undefined) record.oldValue = associatedStrings[uid];
+      scheduleCallback(observer);
+      observer.records_.push(record);
+    }
+  }
+  var slice = Array.prototype.slice;
+  function MutationObserverOptions(options) {
+    this.childList = !!options.childList;
+    this.subtree = !!options.subtree;
+    if (!("attributes" in options) && ("attributeOldValue" in options || "attributeFilter" in options)) {
+      this.attributes = true;
+    } else {
+      this.attributes = !!options.attributes;
+    }
+    if ("characterDataOldValue" in options && !("characterData" in options)) this.characterData = true; else this.characterData = !!options.characterData;
+    if (!this.attributes && (options.attributeOldValue || "attributeFilter" in options) || !this.characterData && options.characterDataOldValue) {
+      throw new TypeError();
+    }
+    this.characterData = !!options.characterData;
+    this.attributeOldValue = !!options.attributeOldValue;
+    this.characterDataOldValue = !!options.characterDataOldValue;
+    if ("attributeFilter" in options) {
+      if (options.attributeFilter == null || typeof options.attributeFilter !== "object") {
+        throw new TypeError();
+      }
+      this.attributeFilter = slice.call(options.attributeFilter);
+    } else {
+      this.attributeFilter = null;
+    }
+  }
+  var uidCounter = 0;
+  function MutationObserver(callback) {
+    this.callback_ = callback;
+    this.nodes_ = [];
+    this.records_ = [];
+    this.uid_ = ++uidCounter;
+    this.scheduled_ = false;
+  }
+  MutationObserver.prototype = {
+    constructor: MutationObserver,
+    observe: function(target, options) {
+      target = wrapIfNeeded(target);
+      var newOptions = new MutationObserverOptions(options);
+      var registration;
+      var registrations = registrationsTable.get(target);
+      if (!registrations) registrationsTable.set(target, registrations = []);
+      for (var i = 0; i < registrations.length; i++) {
+        if (registrations[i].observer === this) {
+          registration = registrations[i];
+          registration.removeTransientObservers();
+          registration.options = newOptions;
+        }
+      }
+      if (!registration) {
+        registration = new Registration(this, target, newOptions);
+        registrations.push(registration);
+        this.nodes_.push(target);
+      }
+    },
+    disconnect: function() {
+      this.nodes_.forEach(function(node) {
+        var registrations = registrationsTable.get(node);
+        for (var i = 0; i < registrations.length; i++) {
+          var registration = registrations[i];
+          if (registration.observer === this) {
+            registrations.splice(i, 1);
+            break;
+          }
+        }
+      }, this);
+      this.records_ = [];
+    },
+    takeRecords: function() {
+      var copyOfRecords = this.records_;
+      this.records_ = [];
+      return copyOfRecords;
+    }
+  };
+  function Registration(observer, target, options) {
+    this.observer = observer;
+    this.target = target;
+    this.options = options;
+    this.transientObservedNodes = [];
+  }
+  Registration.prototype = {
+    addTransientObserver: function(node) {
+      if (node === this.target) return;
+      scheduleCallback(this.observer);
+      this.transientObservedNodes.push(node);
+      var registrations = registrationsTable.get(node);
+      if (!registrations) registrationsTable.set(node, registrations = []);
+      registrations.push(this);
+    },
+    removeTransientObservers: function() {
+      var transientObservedNodes = this.transientObservedNodes;
+      this.transientObservedNodes = [];
+      for (var i = 0; i < transientObservedNodes.length; i++) {
+        var node = transientObservedNodes[i];
+        var registrations = registrationsTable.get(node);
+        for (var j = 0; j < registrations.length; j++) {
+          if (registrations[j] === this) {
+            registrations.splice(j, 1);
+            break;
+          }
+        }
+      }
+    }
+  };
+  scope.enqueueMutation = enqueueMutation;
+  scope.registerTransientObservers = registerTransientObservers;
+  scope.wrappers.MutationObserver = MutationObserver;
+  scope.wrappers.MutationRecord = MutationRecord;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  function TreeScope(root, parent) {
+    this.root = root;
+    this.parent = parent;
+  }
+  TreeScope.prototype = {
+    get renderer() {
+      if (this.root instanceof scope.wrappers.ShadowRoot) {
+        return scope.getRendererForHost(this.root.host);
+      }
+      return null;
+    },
+    contains: function(treeScope) {
+      for (;treeScope; treeScope = treeScope.parent) {
+        if (treeScope === this) return true;
+      }
+      return false;
+    }
+  };
+  function setTreeScope(node, treeScope) {
+    if (node.treeScope_ !== treeScope) {
+      node.treeScope_ = treeScope;
+      for (var sr = node.shadowRoot; sr; sr = sr.olderShadowRoot) {
+        sr.treeScope_.parent = treeScope;
+      }
+      for (var child = node.firstChild; child; child = child.nextSibling) {
+        setTreeScope(child, treeScope);
+      }
+    }
+  }
+  function getTreeScope(node) {
+    if (node instanceof scope.wrappers.Window) {
+      debugger;
+    }
+    if (node.treeScope_) return node.treeScope_;
+    var parent = node.parentNode;
+    var treeScope;
+    if (parent) treeScope = getTreeScope(parent); else treeScope = new TreeScope(node, null);
+    return node.treeScope_ = treeScope;
+  }
+  scope.TreeScope = TreeScope;
+  scope.getTreeScope = getTreeScope;
+  scope.setTreeScope = setTreeScope;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var forwardMethodsToWrapper = scope.forwardMethodsToWrapper;
+  var getTreeScope = scope.getTreeScope;
+  var mixin = scope.mixin;
+  var registerWrapper = scope.registerWrapper;
+  var setWrapper = scope.setWrapper;
+  var unsafeUnwrap = scope.unsafeUnwrap;
+  var unwrap = scope.unwrap;
+  var wrap = scope.wrap;
+  var wrappers = scope.wrappers;
+  var wrappedFuns = new WeakMap();
+  var listenersTable = new WeakMap();
+  var handledEventsTable = new WeakMap();
+  var currentlyDispatchingEvents = new WeakMap();
+  var targetTable = new WeakMap();
+  var currentTargetTable = new WeakMap();
+  var relatedTargetTable = new WeakMap();
+  var eventPhaseTable = new WeakMap();
+  var stopPropagationTable = new WeakMap();
+  var stopImmediatePropagationTable = new WeakMap();
+  var eventHandlersTable = new WeakMap();
+  var eventPathTable = new WeakMap();
+  function isShadowRoot(node) {
+    return node instanceof wrappers.ShadowRoot;
+  }
+  function rootOfNode(node) {
+    return getTreeScope(node).root;
+  }
+  function getEventPath(node, event) {
+    var path = [];
+    var current = node;
+    path.push(current);
+    while (current) {
+      var destinationInsertionPoints = getDestinationInsertionPoints(current);
+      if (destinationInsertionPoints && destinationInsertionPoints.length > 0) {
+        for (var i = 0; i < destinationInsertionPoints.length; i++) {
+          var insertionPoint = destinationInsertionPoints[i];
+          if (isShadowInsertionPoint(insertionPoint)) {
+            var shadowRoot = rootOfNode(insertionPoint);
+            var olderShadowRoot = shadowRoot.olderShadowRoot;
+            if (olderShadowRoot) path.push(olderShadowRoot);
+          }
+          path.push(insertionPoint);
+        }
+        current = destinationInsertionPoints[destinationInsertionPoints.length - 1];
+      } else {
+        if (isShadowRoot(current)) {
+          if (inSameTree(node, current) && eventMustBeStopped(event)) {
+            break;
+          }
+          current = current.host;
+          path.push(current);
+        } else {
+          current = current.parentNode;
+          if (current) path.push(current);
+        }
+      }
+    }
+    return path;
+  }
+  function eventMustBeStopped(event) {
+    if (!event) return false;
+    switch (event.type) {
+     case "abort":
+     case "error":
+     case "select":
+     case "change":
+     case "load":
+     case "reset":
+     case "resize":
+     case "scroll":
+     case "selectstart":
+      return true;
+    }
+    return false;
+  }
+  function isShadowInsertionPoint(node) {
+    return node instanceof HTMLShadowElement;
+  }
+  function getDestinationInsertionPoints(node) {
+    return scope.getDestinationInsertionPoints(node);
+  }
+  function eventRetargetting(path, currentTarget) {
+    if (path.length === 0) return currentTarget;
+    if (currentTarget instanceof wrappers.Window) currentTarget = currentTarget.document;
+    var currentTargetTree = getTreeScope(currentTarget);
+    var originalTarget = path[0];
+    var originalTargetTree = getTreeScope(originalTarget);
+    var relativeTargetTree = lowestCommonInclusiveAncestor(currentTargetTree, originalTargetTree);
+    for (var i = 0; i < path.length; i++) {
+      var node = path[i];
+      if (getTreeScope(node) === relativeTargetTree) return node;
+    }
+    return path[path.length - 1];
+  }
+  function getTreeScopeAncestors(treeScope) {
+    var ancestors = [];
+    for (;treeScope; treeScope = treeScope.parent) {
+      ancestors.push(treeScope);
+    }
+    return ancestors;
+  }
+  function lowestCommonInclusiveAncestor(tsA, tsB) {
+    var ancestorsA = getTreeScopeAncestors(tsA);
+    var ancestorsB = getTreeScopeAncestors(tsB);
+    var result = null;
+    while (ancestorsA.length > 0 && ancestorsB.length > 0) {
+      var a = ancestorsA.pop();
+      var b = ancestorsB.pop();
+      if (a === b) result = a; else break;
+    }
+    return result;
+  }
+  function getTreeScopeRoot(ts) {
+    if (!ts.parent) return ts;
+    return getTreeScopeRoot(ts.parent);
+  }
+  function relatedTargetResolution(event, currentTarget, relatedTarget) {
+    if (currentTarget instanceof wrappers.Window) currentTarget = currentTarget.document;
+    var currentTargetTree = getTreeScope(currentTarget);
+    var relatedTargetTree = getTreeScope(relatedTarget);
+    var relatedTargetEventPath = getEventPath(relatedTarget, event);
+    var lowestCommonAncestorTree;
+    var lowestCommonAncestorTree = lowestCommonInclusiveAncestor(currentTargetTree, relatedTargetTree);
+    if (!lowestCommonAncestorTree) lowestCommonAncestorTree = relatedTargetTree.root;
+    for (var commonAncestorTree = lowestCommonAncestorTree; commonAncestorTree; commonAncestorTree = commonAncestorTree.parent) {
+      var adjustedRelatedTarget;
+      for (var i = 0; i < relatedTargetEventPath.length; i++) {
+        var node = relatedTargetEventPath[i];
+        if (getTreeScope(node) === commonAncestorTree) return node;
+      }
+    }
+    return null;
+  }
+  function inSameTree(a, b) {
+    return getTreeScope(a) === getTreeScope(b);
+  }
+  var NONE = 0;
+  var CAPTURING_PHASE = 1;
+  var AT_TARGET = 2;
+  var BUBBLING_PHASE = 3;
+  var pendingError;
+  function dispatchOriginalEvent(originalEvent) {
+    if (handledEventsTable.get(originalEvent)) return;
+    handledEventsTable.set(originalEvent, true);
+    dispatchEvent(wrap(originalEvent), wrap(originalEvent.target));
+    if (pendingError) {
+      var err = pendingError;
+      pendingError = null;
+      throw err;
+    }
+  }
+  function isLoadLikeEvent(event) {
+    switch (event.type) {
+     case "load":
+     case "beforeunload":
+     case "unload":
+      return true;
+    }
+    return false;
+  }
+  function dispatchEvent(event, originalWrapperTarget) {
+    if (currentlyDispatchingEvents.get(event)) throw new Error("InvalidStateError");
+    currentlyDispatchingEvents.set(event, true);
+    scope.renderAllPending();
+    var eventPath;
+    var overrideTarget;
+    var win;
+    if (isLoadLikeEvent(event) && !event.bubbles) {
+      var doc = originalWrapperTarget;
+      if (doc instanceof wrappers.Document && (win = doc.defaultView)) {
+        overrideTarget = doc;
+        eventPath = [];
+      }
+    }
+    if (!eventPath) {
+      if (originalWrapperTarget instanceof wrappers.Window) {
+        win = originalWrapperTarget;
+        eventPath = [];
+      } else {
+        eventPath = getEventPath(originalWrapperTarget, event);
+        if (!isLoadLikeEvent(event)) {
+          var doc = eventPath[eventPath.length - 1];
+          if (doc instanceof wrappers.Document) win = doc.defaultView;
+        }
+      }
+    }
+    eventPathTable.set(event, eventPath);
+    if (dispatchCapturing(event, eventPath, win, overrideTarget)) {
+      if (dispatchAtTarget(event, eventPath, win, overrideTarget)) {
+        dispatchBubbling(event, eventPath, win, overrideTarget);
+      }
+    }
+    eventPhaseTable.set(event, NONE);
+    currentTargetTable.delete(event, null);
+    currentlyDispatchingEvents.delete(event);
+    return event.defaultPrevented;
+  }
+  function dispatchCapturing(event, eventPath, win, overrideTarget) {
+    var phase = CAPTURING_PHASE;
+    if (win) {
+      if (!invoke(win, event, phase, eventPath, overrideTarget)) return false;
+    }
+    for (var i = eventPath.length - 1; i > 0; i--) {
+      if (!invoke(eventPath[i], event, phase, eventPath, overrideTarget)) return false;
+    }
+    return true;
+  }
+  function dispatchAtTarget(event, eventPath, win, overrideTarget) {
+    var phase = AT_TARGET;
+    var currentTarget = eventPath[0] || win;
+    return invoke(currentTarget, event, phase, eventPath, overrideTarget);
+  }
+  function dispatchBubbling(event, eventPath, win, overrideTarget) {
+    var phase = BUBBLING_PHASE;
+    for (var i = 1; i < eventPath.length; i++) {
+      if (!invoke(eventPath[i], event, phase, eventPath, overrideTarget)) return;
+    }
+    if (win && eventPath.length > 0) {
+      invoke(win, event, phase, eventPath, overrideTarget);
+    }
+  }
+  function invoke(currentTarget, event, phase, eventPath, overrideTarget) {
+    var listeners = listenersTable.get(currentTarget);
+    if (!listeners) return true;
+    var target = overrideTarget || eventRetargetting(eventPath, currentTarget);
+    if (target === currentTarget) {
+      if (phase === CAPTURING_PHASE) return true;
+      if (phase === BUBBLING_PHASE) phase = AT_TARGET;
+    } else if (phase === BUBBLING_PHASE && !event.bubbles) {
+      return true;
+    }
+    if ("relatedTarget" in event) {
+      var originalEvent = unwrap(event);
+      var unwrappedRelatedTarget = originalEvent.relatedTarget;
+      if (unwrappedRelatedTarget) {
+        if (unwrappedRelatedTarget instanceof Object && unwrappedRelatedTarget.addEventListener) {
+          var relatedTarget = wrap(unwrappedRelatedTarget);
+          var adjusted = relatedTargetResolution(event, currentTarget, relatedTarget);
+          if (adjusted === target) return true;
+        } else {
+          adjusted = null;
+        }
+        relatedTargetTable.set(event, adjusted);
+      }
+    }
+    eventPhaseTable.set(event, phase);
+    var type = event.type;
+    var anyRemoved = false;
+    targetTable.set(event, target);
+    currentTargetTable.set(event, currentTarget);
+    listeners.depth++;
+    for (var i = 0, len = listeners.length; i < len; i++) {
+      var listener = listeners[i];
+      if (listener.removed) {
+        anyRemoved = true;
+        continue;
+      }
+      if (listener.type !== type || !listener.capture && phase === CAPTURING_PHASE || listener.capture && phase === BUBBLING_PHASE) {
+        continue;
+      }
+      try {
+        if (typeof listener.handler === "function") listener.handler.call(currentTarget, event); else listener.handler.handleEvent(event);
+        if (stopImmediatePropagationTable.get(event)) return false;
+      } catch (ex) {
+        if (!pendingError) pendingError = ex;
+      }
+    }
+    listeners.depth--;
+    if (anyRemoved && listeners.depth === 0) {
+      var copy = listeners.slice();
+      listeners.length = 0;
+      for (var i = 0; i < copy.length; i++) {
+        if (!copy[i].removed) listeners.push(copy[i]);
+      }
+    }
+    return !stopPropagationTable.get(event);
+  }
+  function Listener(type, handler, capture) {
+    this.type = type;
+    this.handler = handler;
+    this.capture = Boolean(capture);
+  }
+  Listener.prototype = {
+    equals: function(that) {
+      return this.handler === that.handler && this.type === that.type && this.capture === that.capture;
+    },
+    get removed() {
+      return this.handler === null;
+    },
+    remove: function() {
+      this.handler = null;
+    }
+  };
+  var OriginalEvent = window.Event;
+  OriginalEvent.prototype.polymerBlackList_ = {
+    returnValue: true,
+    keyLocation: true
+  };
+  function Event(type, options) {
+    if (type instanceof OriginalEvent) {
+      var impl = type;
+      if (!OriginalBeforeUnloadEvent && impl.type === "beforeunload" && !(this instanceof BeforeUnloadEvent)) {
+        return new BeforeUnloadEvent(impl);
+      }
+      setWrapper(impl, this);
+    } else {
+      return wrap(constructEvent(OriginalEvent, "Event", type, options));
+    }
+  }
+  Event.prototype = {
+    get target() {
+      return targetTable.get(this);
+    },
+    get currentTarget() {
+      return currentTargetTable.get(this);
+    },
+    get eventPhase() {
+      return eventPhaseTable.get(this);
+    },
+    get path() {
+      var eventPath = eventPathTable.get(this);
+      if (!eventPath) return [];
+      return eventPath.slice();
+    },
+    stopPropagation: function() {
+      stopPropagationTable.set(this, true);
+    },
+    stopImmediatePropagation: function() {
+      stopPropagationTable.set(this, true);
+      stopImmediatePropagationTable.set(this, true);
+    }
+  };
+  var supportsDefaultPrevented = function() {
+    var e = document.createEvent("Event");
+    e.initEvent("test", true, true);
+    e.preventDefault();
+    return e.defaultPrevented;
+  }();
+  if (!supportsDefaultPrevented) {
+    Event.prototype.preventDefault = function() {
+      if (!this.cancelable) return;
+      unsafeUnwrap(this).preventDefault();
+      Object.defineProperty(this, "defaultPrevented", {
+        get: function() {
+          return true;
+        },
+        configurable: true
+      });
+    };
+  }
+  registerWrapper(OriginalEvent, Event, document.createEvent("Event"));
+  function unwrapOptions(options) {
+    if (!options || !options.relatedTarget) return options;
+    return Object.create(options, {
+      relatedTarget: {
+        value: unwrap(options.relatedTarget)
+      }
+    });
+  }
+  function registerGenericEvent(name, SuperEvent, prototype) {
+    var OriginalEvent = window[name];
+    var GenericEvent = function(type, options) {
+      if (type instanceof OriginalEvent) setWrapper(type, this); else return wrap(constructEvent(OriginalEvent, name, type, options));
+    };
+    GenericEvent.prototype = Object.create(SuperEvent.prototype);
+    if (prototype) mixin(GenericEvent.prototype, prototype);
+    if (OriginalEvent) {
+      try {
+        registerWrapper(OriginalEvent, GenericEvent, new OriginalEvent("temp"));
+      } catch (ex) {
+        registerWrapper(OriginalEvent, GenericEvent, document.createEvent(name));
+      }
+    }
+    return GenericEvent;
+  }
+  var UIEvent = registerGenericEvent("UIEvent", Event);
+  var CustomEvent = registerGenericEvent("CustomEvent", Event);
+  var relatedTargetProto = {
+    get relatedTarget() {
+      var relatedTarget = relatedTargetTable.get(this);
+      if (relatedTarget !== undefined) return relatedTarget;
+      return wrap(unwrap(this).relatedTarget);
+    }
+  };
+  function getInitFunction(name, relatedTargetIndex) {
+    return function() {
+      arguments[relatedTargetIndex] = unwrap(arguments[relatedTargetIndex]);
+      var impl = unwrap(this);
+      impl[name].apply(impl, arguments);
+    };
+  }
+  var mouseEventProto = mixin({
+    initMouseEvent: getInitFunction("initMouseEvent", 14)
+  }, relatedTargetProto);
+  var focusEventProto = mixin({
+    initFocusEvent: getInitFunction("initFocusEvent", 5)
+  }, relatedTargetProto);
+  var MouseEvent = registerGenericEvent("MouseEvent", UIEvent, mouseEventProto);
+  var FocusEvent = registerGenericEvent("FocusEvent", UIEvent, focusEventProto);
+  var defaultInitDicts = Object.create(null);
+  var supportsEventConstructors = function() {
+    try {
+      new window.FocusEvent("focus");
+    } catch (ex) {
+      return false;
+    }
+    return true;
+  }();
+  function constructEvent(OriginalEvent, name, type, options) {
+    if (supportsEventConstructors) return new OriginalEvent(type, unwrapOptions(options));
+    var event = unwrap(document.createEvent(name));
+    var defaultDict = defaultInitDicts[name];
+    var args = [ type ];
+    Object.keys(defaultDict).forEach(function(key) {
+      var v = options != null && key in options ? options[key] : defaultDict[key];
+      if (key === "relatedTarget") v = unwrap(v);
+      args.push(v);
+    });
+    event["init" + name].apply(event, args);
+    return event;
+  }
+  if (!supportsEventConstructors) {
+    var configureEventConstructor = function(name, initDict, superName) {
+      if (superName) {
+        var superDict = defaultInitDicts[superName];
+        initDict = mixin(mixin({}, superDict), initDict);
+      }
+      defaultInitDicts[name] = initDict;
+    };
+    configureEventConstructor("Event", {
+      bubbles: false,
+      cancelable: false
+    });
+    configureEventConstructor("CustomEvent", {
+      detail: null
+    }, "Event");
+    configureEventConstructor("UIEvent", {
+      view: null,
+      detail: 0
+    }, "Event");
+    configureEventConstructor("MouseEvent", {
+      screenX: 0,
+      screenY: 0,
+      clientX: 0,
+      clientY: 0,
+      ctrlKey: false,
+      altKey: false,
+      shiftKey: false,
+      metaKey: false,
+      button: 0,
+      relatedTarget: null
+    }, "UIEvent");
+    configureEventConstructor("FocusEvent", {
+      relatedTarget: null
+    }, "UIEvent");
+  }
+  var OriginalBeforeUnloadEvent = window.BeforeUnloadEvent;
+  function BeforeUnloadEvent(impl) {
+    Event.call(this, impl);
+  }
+  BeforeUnloadEvent.prototype = Object.create(Event.prototype);
+  mixin(BeforeUnloadEvent.prototype, {
+    get returnValue() {
+      return unsafeUnwrap(this).returnValue;
+    },
+    set returnValue(v) {
+      unsafeUnwrap(this).returnValue = v;
+    }
+  });
+  if (OriginalBeforeUnloadEvent) registerWrapper(OriginalBeforeUnloadEvent, BeforeUnloadEvent);
+  function isValidListener(fun) {
+    if (typeof fun === "function") return true;
+    return fun && fun.handleEvent;
+  }
+  function isMutationEvent(type) {
+    switch (type) {
+     case "DOMAttrModified":
+     case "DOMAttributeNameChanged":
+     case "DOMCharacterDataModified":
+     case "DOMElementNameChanged":
+     case "DOMNodeInserted":
+     case "DOMNodeInsertedIntoDocument":
+     case "DOMNodeRemoved":
+     case "DOMNodeRemovedFromDocument":
+     case "DOMSubtreeModified":
+      return true;
+    }
+    return false;
+  }
+  var OriginalEventTarget = window.EventTarget;
+  function EventTarget(impl) {
+    setWrapper(impl, this);
+  }
+  var methodNames = [ "addEventListener", "removeEventListener", "dispatchEvent" ];
+  [ Node, Window ].forEach(function(constructor) {
+    var p = constructor.prototype;
+    methodNames.forEach(function(name) {
+      Object.defineProperty(p, name + "_", {
+        value: p[name]
+      });
+    });
+  });
+  function getTargetToListenAt(wrapper) {
+    if (wrapper instanceof wrappers.ShadowRoot) wrapper = wrapper.host;
+    return unwrap(wrapper);
+  }
+  EventTarget.prototype = {
+    addEventListener: function(type, fun, capture) {
+      if (!isValidListener(fun) || isMutationEvent(type)) return;
+      var listener = new Listener(type, fun, capture);
+      var listeners = listenersTable.get(this);
+      if (!listeners) {
+        listeners = [];
+        listeners.depth = 0;
+        listenersTable.set(this, listeners);
+      } else {
+        for (var i = 0; i < listeners.length; i++) {
+          if (listener.equals(listeners[i])) return;
+        }
+      }
+      listeners.push(listener);
+      var target = getTargetToListenAt(this);
+      target.addEventListener_(type, dispatchOriginalEvent, true);
+    },
+    removeEventListener: function(type, fun, capture) {
+      capture = Boolean(capture);
+      var listeners = listenersTable.get(this);
+      if (!listeners) return;
+      var count = 0, found = false;
+      for (var i = 0; i < listeners.length; i++) {
+        if (listeners[i].type === type && listeners[i].capture === capture) {
+          count++;
+          if (listeners[i].handler === fun) {
+            found = true;
+            listeners[i].remove();
+          }
+        }
+      }
+      if (found && count === 1) {
+        var target = getTargetToListenAt(this);
+        target.removeEventListener_(type, dispatchOriginalEvent, true);
+      }
+    },
+    dispatchEvent: function(event) {
+      var nativeEvent = unwrap(event);
+      var eventType = nativeEvent.type;
+      handledEventsTable.set(nativeEvent, false);
+      scope.renderAllPending();
+      var tempListener;
+      if (!hasListenerInAncestors(this, eventType)) {
+        tempListener = function() {};
+        this.addEventListener(eventType, tempListener, true);
+      }
+      try {
+        return unwrap(this).dispatchEvent_(nativeEvent);
+      } finally {
+        if (tempListener) this.removeEventListener(eventType, tempListener, true);
+      }
+    }
+  };
+  function hasListener(node, type) {
+    var listeners = listenersTable.get(node);
+    if (listeners) {
+      for (var i = 0; i < listeners.length; i++) {
+        if (!listeners[i].removed && listeners[i].type === type) return true;
+      }
+    }
+    return false;
+  }
+  function hasListenerInAncestors(target, type) {
+    for (var node = unwrap(target); node; node = node.parentNode) {
+      if (hasListener(wrap(node), type)) return true;
+    }
+    return false;
+  }
+  if (OriginalEventTarget) registerWrapper(OriginalEventTarget, EventTarget);
+  function wrapEventTargetMethods(constructors) {
+    forwardMethodsToWrapper(constructors, methodNames);
+  }
+  var originalElementFromPoint = document.elementFromPoint;
+  function elementFromPoint(self, document, x, y) {
+    scope.renderAllPending();
+    var element = wrap(originalElementFromPoint.call(unsafeUnwrap(document), x, y));
+    if (!element) return null;
+    var path = getEventPath(element, null);
+    var idx = path.lastIndexOf(self);
+    if (idx == -1) return null; else path = path.slice(0, idx);
+    return eventRetargetting(path, self);
+  }
+  function getEventHandlerGetter(name) {
+    return function() {
+      var inlineEventHandlers = eventHandlersTable.get(this);
+      return inlineEventHandlers && inlineEventHandlers[name] && inlineEventHandlers[name].value || null;
+    };
+  }
+  function getEventHandlerSetter(name) {
+    var eventType = name.slice(2);
+    return function(value) {
+      var inlineEventHandlers = eventHandlersTable.get(this);
+      if (!inlineEventHandlers) {
+        inlineEventHandlers = Object.create(null);
+        eventHandlersTable.set(this, inlineEventHandlers);
+      }
+      var old = inlineEventHandlers[name];
+      if (old) this.removeEventListener(eventType, old.wrapped, false);
+      if (typeof value === "function") {
+        var wrapped = function(e) {
+          var rv = value.call(this, e);
+          if (rv === false) e.preventDefault(); else if (name === "onbeforeunload" && typeof rv === "string") e.returnValue = rv;
+        };
+        this.addEventListener(eventType, wrapped, false);
+        inlineEventHandlers[name] = {
+          value: value,
+          wrapped: wrapped
+        };
+      }
+    };
+  }
+  scope.elementFromPoint = elementFromPoint;
+  scope.getEventHandlerGetter = getEventHandlerGetter;
+  scope.getEventHandlerSetter = getEventHandlerSetter;
+  scope.wrapEventTargetMethods = wrapEventTargetMethods;
+  scope.wrappers.BeforeUnloadEvent = BeforeUnloadEvent;
+  scope.wrappers.CustomEvent = CustomEvent;
+  scope.wrappers.Event = Event;
+  scope.wrappers.EventTarget = EventTarget;
+  scope.wrappers.FocusEvent = FocusEvent;
+  scope.wrappers.MouseEvent = MouseEvent;
+  scope.wrappers.UIEvent = UIEvent;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var UIEvent = scope.wrappers.UIEvent;
+  var mixin = scope.mixin;
+  var registerWrapper = scope.registerWrapper;
+  var setWrapper = scope.setWrapper;
+  var unsafeUnwrap = scope.unsafeUnwrap;
+  var wrap = scope.wrap;
+  var OriginalTouchEvent = window.TouchEvent;
+  if (!OriginalTouchEvent) return;
+  var nativeEvent;
+  try {
+    nativeEvent = document.createEvent("TouchEvent");
+  } catch (ex) {
+    return;
+  }
+  var nonEnumDescriptor = {
+    enumerable: false
+  };
+  function nonEnum(obj, prop) {
+    Object.defineProperty(obj, prop, nonEnumDescriptor);
+  }
+  function Touch(impl) {
+    setWrapper(impl, this);
+  }
+  Touch.prototype = {
+    get target() {
+      return wrap(unsafeUnwrap(this).target);
+    }
+  };
+  var descr = {
+    configurable: true,
+    enumerable: true,
+    get: null
+  };
+  [ "clientX", "clientY", "screenX", "screenY", "pageX", "pageY", "identifier", "webkitRadiusX", "webkitRadiusY", "webkitRotationAngle", "webkitForce" ].forEach(function(name) {
+    descr.get = function() {
+      return unsafeUnwrap(this)[name];
+    };
+    Object.defineProperty(Touch.prototype, name, descr);
+  });
+  function TouchList() {
+    this.length = 0;
+    nonEnum(this, "length");
+  }
+  TouchList.prototype = {
+    item: function(index) {
+      return this[index];
+    }
+  };
+  function wrapTouchList(nativeTouchList) {
+    var list = new TouchList();
+    for (var i = 0; i < nativeTouchList.length; i++) {
+      list[i] = new Touch(nativeTouchList[i]);
+    }
+    list.length = i;
+    return list;
+  }
+  function TouchEvent(impl) {
+    UIEvent.call(this, impl);
+  }
+  TouchEvent.prototype = Object.create(UIEvent.prototype);
+  mixin(TouchEvent.prototype, {
+    get touches() {
+      return wrapTouchList(unsafeUnwrap(this).touches);
+    },
+    get targetTouches() {
+      return wrapTouchList(unsafeUnwrap(this).targetTouches);
+    },
+    get changedTouches() {
+      return wrapTouchList(unsafeUnwrap(this).changedTouches);
+    },
+    initTouchEvent: function() {
+      throw new Error("Not implemented");
+    }
+  });
+  registerWrapper(OriginalTouchEvent, TouchEvent, nativeEvent);
+  scope.wrappers.Touch = Touch;
+  scope.wrappers.TouchEvent = TouchEvent;
+  scope.wrappers.TouchList = TouchList;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var unsafeUnwrap = scope.unsafeUnwrap;
+  var wrap = scope.wrap;
+  var nonEnumDescriptor = {
+    enumerable: false
+  };
+  function nonEnum(obj, prop) {
+    Object.defineProperty(obj, prop, nonEnumDescriptor);
+  }
+  function NodeList() {
+    this.length = 0;
+    nonEnum(this, "length");
+  }
+  NodeList.prototype = {
+    item: function(index) {
+      return this[index];
+    }
+  };
+  nonEnum(NodeList.prototype, "item");
+  function wrapNodeList(list) {
+    if (list == null) return list;
+    var wrapperList = new NodeList();
+    for (var i = 0, length = list.length; i < length; i++) {
+      wrapperList[i] = wrap(list[i]);
+    }
+    wrapperList.length = length;
+    return wrapperList;
+  }
+  function addWrapNodeListMethod(wrapperConstructor, name) {
+    wrapperConstructor.prototype[name] = function() {
+      return wrapNodeList(unsafeUnwrap(this)[name].apply(unsafeUnwrap(this), arguments));
+    };
+  }
+  scope.wrappers.NodeList = NodeList;
+  scope.addWrapNodeListMethod = addWrapNodeListMethod;
+  scope.wrapNodeList = wrapNodeList;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  scope.wrapHTMLCollection = scope.wrapNodeList;
+  scope.wrappers.HTMLCollection = scope.wrappers.NodeList;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var EventTarget = scope.wrappers.EventTarget;
+  var NodeList = scope.wrappers.NodeList;
+  var TreeScope = scope.TreeScope;
+  var assert = scope.assert;
+  var defineWrapGetter = scope.defineWrapGetter;
+  var enqueueMutation = scope.enqueueMutation;
+  var getTreeScope = scope.getTreeScope;
+  var isWrapper = scope.isWrapper;
+  var mixin = scope.mixin;
+  var registerTransientObservers = scope.registerTransientObservers;
+  var registerWrapper = scope.registerWrapper;
+  var setTreeScope = scope.setTreeScope;
+  var unsafeUnwrap = scope.unsafeUnwrap;
+  var unwrap = scope.unwrap;
+  var unwrapIfNeeded = scope.unwrapIfNeeded;
+  var wrap = scope.wrap;
+  var wrapIfNeeded = scope.wrapIfNeeded;
+  var wrappers = scope.wrappers;
+  function assertIsNodeWrapper(node) {
+    assert(node instanceof Node);
+  }
+  function createOneElementNodeList(node) {
+    var nodes = new NodeList();
+    nodes[0] = node;
+    nodes.length = 1;
+    return nodes;
+  }
+  var surpressMutations = false;
+  function enqueueRemovalForInsertedNodes(node, parent, nodes) {
+    enqueueMutation(parent, "childList", {
+      removedNodes: nodes,
+      previousSibling: node.previousSibling,
+      nextSibling: node.nextSibling
+    });
+  }
+  function enqueueRemovalForInsertedDocumentFragment(df, nodes) {
+    enqueueMutation(df, "childList", {
+      removedNodes: nodes
+    });
+  }
+  function collectNodes(node, parentNode, previousNode, nextNode) {
+    if (node instanceof DocumentFragment) {
+      var nodes = collectNodesForDocumentFragment(node);
+      surpressMutations = true;
+      for (var i = nodes.length - 1; i >= 0; i--) {
+        node.removeChild(nodes[i]);
+        nodes[i].parentNode_ = parentNode;
+      }
+      surpressMutations = false;
+      for (var i = 0; i < nodes.length; i++) {
+        nodes[i].previousSibling_ = nodes[i - 1] || previousNode;
+        nodes[i].nextSibling_ = nodes[i + 1] || nextNode;
+      }
+      if (previousNode) previousNode.nextSibling_ = nodes[0];
+      if (nextNode) nextNode.previousSibling_ = nodes[nodes.length - 1];
+      return nodes;
+    }
+    var nodes = createOneElementNodeList(node);
+    var oldParent = node.parentNode;
+    if (oldParent) {
+      oldParent.removeChild(node);
+    }
+    node.parentNode_ = parentNode;
+    node.previousSibling_ = previousNode;
+    node.nextSibling_ = nextNode;
+    if (previousNode) previousNode.nextSibling_ = node;
+    if (nextNode) nextNode.previousSibling_ = node;
+    return nodes;
+  }
+  function collectNodesNative(node) {
+    if (node instanceof DocumentFragment) return collectNodesForDocumentFragment(node);
+    var nodes = createOneElementNodeList(node);
+    var oldParent = node.parentNode;
+    if (oldParent) enqueueRemovalForInsertedNodes(node, oldParent, nodes);
+    return nodes;
+  }
+  function collectNodesForDocumentFragment(node) {
+    var nodes = new NodeList();
+    var i = 0;
+    for (var child = node.firstChild; child; child = child.nextSibling) {
+      nodes[i++] = child;
+    }
+    nodes.length = i;
+    enqueueRemovalForInsertedDocumentFragment(node, nodes);
+    return nodes;
+  }
+  function snapshotNodeList(nodeList) {
+    return nodeList;
+  }
+  function nodeWasAdded(node, treeScope) {
+    setTreeScope(node, treeScope);
+    node.nodeIsInserted_();
+  }
+  function nodesWereAdded(nodes, parent) {
+    var treeScope = getTreeScope(parent);
+    for (var i = 0; i < nodes.length; i++) {
+      nodeWasAdded(nodes[i], treeScope);
+    }
+  }
+  function nodeWasRemoved(node) {
+    setTreeScope(node, new TreeScope(node, null));
+  }
+  function nodesWereRemoved(nodes) {
+    for (var i = 0; i < nodes.length; i++) {
+      nodeWasRemoved(nodes[i]);
+    }
+  }
+  function ensureSameOwnerDocument(parent, child) {
+    var ownerDoc = parent.nodeType === Node.DOCUMENT_NODE ? parent : parent.ownerDocument;
+    if (ownerDoc !== child.ownerDocument) ownerDoc.adoptNode(child);
+  }
+  function adoptNodesIfNeeded(owner, nodes) {
+    if (!nodes.length) return;
+    var ownerDoc = owner.ownerDocument;
+    if (ownerDoc === nodes[0].ownerDocument) return;
+    for (var i = 0; i < nodes.length; i++) {
+      scope.adoptNodeNoRemove(nodes[i], ownerDoc);
+    }
+  }
+  function unwrapNodesForInsertion(owner, nodes) {
+    adoptNodesIfNeeded(owner, nodes);
+    var length = nodes.length;
+    if (length === 1) return unwrap(nodes[0]);
+    var df = unwrap(owner.ownerDocument.createDocumentFragment());
+    for (var i = 0; i < length; i++) {
+      df.appendChild(unwrap(nodes[i]));
+    }
+    return df;
+  }
+  function clearChildNodes(wrapper) {
+    if (wrapper.firstChild_ !== undefined) {
+      var child = wrapper.firstChild_;
+      while (child) {
+        var tmp = child;
+        child = child.nextSibling_;
+        tmp.parentNode_ = tmp.previousSibling_ = tmp.nextSibling_ = undefined;
+      }
+    }
+    wrapper.firstChild_ = wrapper.lastChild_ = undefined;
+  }
+  function removeAllChildNodes(wrapper) {
+    if (wrapper.invalidateShadowRenderer()) {
+      var childWrapper = wrapper.firstChild;
+      while (childWrapper) {
+        assert(childWrapper.parentNode === wrapper);
+        var nextSibling = childWrapper.nextSibling;
+        var childNode = unwrap(childWrapper);
+        var parentNode = childNode.parentNode;
+        if (parentNode) originalRemoveChild.call(parentNode, childNode);
+        childWrapper.previousSibling_ = childWrapper.nextSibling_ = childWrapper.parentNode_ = null;
+        childWrapper = nextSibling;
+      }
+      wrapper.firstChild_ = wrapper.lastChild_ = null;
+    } else {
+      var node = unwrap(wrapper);
+      var child = node.firstChild;
+      var nextSibling;
+      while (child) {
+        nextSibling = child.nextSibling;
+        originalRemoveChild.call(node, child);
+        child = nextSibling;
+      }
+    }
+  }
+  function invalidateParent(node) {
+    var p = node.parentNode;
+    return p && p.invalidateShadowRenderer();
+  }
+  function cleanupNodes(nodes) {
+    for (var i = 0, n; i < nodes.length; i++) {
+      n = nodes[i];
+      n.parentNode.removeChild(n);
+    }
+  }
+  var originalImportNode = document.importNode;
+  var originalCloneNode = window.Node.prototype.cloneNode;
+  function cloneNode(node, deep, opt_doc) {
+    var clone;
+    if (opt_doc) clone = wrap(originalImportNode.call(opt_doc, unsafeUnwrap(node), false)); else clone = wrap(originalCloneNode.call(unsafeUnwrap(node), false));
+    if (deep) {
+      for (var child = node.firstChild; child; child = child.nextSibling) {
+        clone.appendChild(cloneNode(child, true, opt_doc));
+      }
+      if (node instanceof wrappers.HTMLTemplateElement) {
+        var cloneContent = clone.content;
+        for (var child = node.content.firstChild; child; child = child.nextSibling) {
+          cloneContent.appendChild(cloneNode(child, true, opt_doc));
+        }
+      }
+    }
+    return clone;
+  }
+  function contains(self, child) {
+    if (!child || getTreeScope(self) !== getTreeScope(child)) return false;
+    for (var node = child; node; node = node.parentNode) {
+      if (node === self) return true;
+    }
+    return false;
+  }
+  var OriginalNode = window.Node;
+  function Node(original) {
+    assert(original instanceof OriginalNode);
+    EventTarget.call(this, original);
+    this.parentNode_ = undefined;
+    this.firstChild_ = undefined;
+    this.lastChild_ = undefined;
+    this.nextSibling_ = undefined;
+    this.previousSibling_ = undefined;
+    this.treeScope_ = undefined;
+  }
+  var OriginalDocumentFragment = window.DocumentFragment;
+  var originalAppendChild = OriginalNode.prototype.appendChild;
+  var originalCompareDocumentPosition = OriginalNode.prototype.compareDocumentPosition;
+  var originalIsEqualNode = OriginalNode.prototype.isEqualNode;
+  var originalInsertBefore = OriginalNode.prototype.insertBefore;
+  var originalRemoveChild = OriginalNode.prototype.removeChild;
+  var originalReplaceChild = OriginalNode.prototype.replaceChild;
+  var isIEOrEdge = /Trident|Edge/.test(navigator.userAgent);
+  var removeChildOriginalHelper = isIEOrEdge ? function(parent, child) {
+    try {
+      originalRemoveChild.call(parent, child);
+    } catch (ex) {
+      if (!(parent instanceof OriginalDocumentFragment)) throw ex;
+    }
+  } : function(parent, child) {
+    originalRemoveChild.call(parent, child);
+  };
+  Node.prototype = Object.create(EventTarget.prototype);
+  mixin(Node.prototype, {
+    appendChild: function(childWrapper) {
+      return this.insertBefore(childWrapper, null);
+    },
+    insertBefore: function(childWrapper, refWrapper) {
+      assertIsNodeWrapper(childWrapper);
+      var refNode;
+      if (refWrapper) {
+        if (isWrapper(refWrapper)) {
+          refNode = unwrap(refWrapper);
+        } else {
+          refNode = refWrapper;
+          refWrapper = wrap(refNode);
+        }
+      } else {
+        refWrapper = null;
+        refNode = null;
+      }
+      refWrapper && assert(refWrapper.parentNode === this);
+      var nodes;
+      var previousNode = refWrapper ? refWrapper.previousSibling : this.lastChild;
+      var useNative = !this.invalidateShadowRenderer() && !invalidateParent(childWrapper);
+      if (useNative) nodes = collectNodesNative(childWrapper); else nodes = collectNodes(childWrapper, this, previousNode, refWrapper);
+      if (useNative) {
+        ensureSameOwnerDocument(this, childWrapper);
+        clearChildNodes(this);
+        originalInsertBefore.call(unsafeUnwrap(this), unwrap(childWrapper), refNode);
+      } else {
+        if (!previousNode) this.firstChild_ = nodes[0];
+        if (!refWrapper) {
+          this.lastChild_ = nodes[nodes.length - 1];
+          if (this.firstChild_ === undefined) this.firstChild_ = this.firstChild;
+        }
+        var parentNode = refNode ? refNode.parentNode : unsafeUnwrap(this);
+        if (parentNode) {
+          originalInsertBefore.call(parentNode, unwrapNodesForInsertion(this, nodes), refNode);
+        } else {
+          adoptNodesIfNeeded(this, nodes);
+        }
+      }
+      enqueueMutation(this, "childList", {
+        addedNodes: nodes,
+        nextSibling: refWrapper,
+        previousSibling: previousNode
+      });
+      nodesWereAdded(nodes, this);
+      return childWrapper;
+    },
+    removeChild: function(childWrapper) {
+      assertIsNodeWrapper(childWrapper);
+      if (childWrapper.parentNode !== this) {
+        var found = false;
+        var childNodes = this.childNodes;
+        for (var ieChild = this.firstChild; ieChild; ieChild = ieChild.nextSibling) {
+          if (ieChild === childWrapper) {
+            found = true;
+            break;
+          }
+        }
+        if (!found) {
+          throw new Error("NotFoundError");
+        }
+      }
+      var childNode = unwrap(childWrapper);
+      var childWrapperNextSibling = childWrapper.nextSibling;
+      var childWrapperPreviousSibling = childWrapper.previousSibling;
+      if (this.invalidateShadowRenderer()) {
+        var thisFirstChild = this.firstChild;
+        var thisLastChild = this.lastChild;
+        var parentNode = childNode.parentNode;
+        if (parentNode) removeChildOriginalHelper(parentNode, childNode);
+        if (thisFirstChild === childWrapper) this.firstChild_ = childWrapperNextSibling;
+        if (thisLastChild === childWrapper) this.lastChild_ = childWrapperPreviousSibling;
+        if (childWrapperPreviousSibling) childWrapperPreviousSibling.nextSibling_ = childWrapperNextSibling;
+        if (childWrapperNextSibling) {
+          childWrapperNextSibling.previousSibling_ = childWrapperPreviousSibling;
+        }
+        childWrapper.previousSibling_ = childWrapper.nextSibling_ = childWrapper.parentNode_ = undefined;
+      } else {
+        clearChildNodes(this);
+        removeChildOriginalHelper(unsafeUnwrap(this), childNode);
+      }
+      if (!surpressMutations) {
+        enqueueMutation(this, "childList", {
+          removedNodes: createOneElementNodeList(childWrapper),
+          nextSibling: childWrapperNextSibling,
+          previousSibling: childWrapperPreviousSibling
+        });
+      }
+      registerTransientObservers(this, childWrapper);
+      return childWrapper;
+    },
+    replaceChild: function(newChildWrapper, oldChildWrapper) {
+      assertIsNodeWrapper(newChildWrapper);
+      var oldChildNode;
+      if (isWrapper(oldChildWrapper)) {
+        oldChildNode = unwrap(oldChildWrapper);
+      } else {
+        oldChildNode = oldChildWrapper;
+        oldChildWrapper = wrap(oldChildNode);
+      }
+      if (oldChildWrapper.parentNode !== this) {
+        throw new Error("NotFoundError");
+      }
+      var nextNode = oldChildWrapper.nextSibling;
+      var previousNode = oldChildWrapper.previousSibling;
+      var nodes;
+      var useNative = !this.invalidateShadowRenderer() && !invalidateParent(newChildWrapper);
+      if (useNative) {
+        nodes = collectNodesNative(newChildWrapper);
+      } else {
+        if (nextNode === newChildWrapper) nextNode = newChildWrapper.nextSibling;
+        nodes = collectNodes(newChildWrapper, this, previousNode, nextNode);
+      }
+      if (!useNative) {
+        if (this.firstChild === oldChildWrapper) this.firstChild_ = nodes[0];
+        if (this.lastChild === oldChildWrapper) this.lastChild_ = nodes[nodes.length - 1];
+        oldChildWrapper.previousSibling_ = oldChildWrapper.nextSibling_ = oldChildWrapper.parentNode_ = undefined;
+        if (oldChildNode.parentNode) {
+          originalReplaceChild.call(oldChildNode.parentNode, unwrapNodesForInsertion(this, nodes), oldChildNode);
+        }
+      } else {
+        ensureSameOwnerDocument(this, newChildWrapper);
+        clearChildNodes(this);
+        originalReplaceChild.call(unsafeUnwrap(this), unwrap(newChildWrapper), oldChildNode);
+      }
+      enqueueMutation(this, "childList", {
+        addedNodes: nodes,
+        removedNodes: createOneElementNodeList(oldChildWrapper),
+        nextSibling: nextNode,
+        previousSibling: previousNode
+      });
+      nodeWasRemoved(oldChildWrapper);
+      nodesWereAdded(nodes, this);
+      return oldChildWrapper;
+    },
+    nodeIsInserted_: function() {
+      for (var child = this.firstChild; child; child = child.nextSibling) {
+        child.nodeIsInserted_();
+      }
+    },
+    hasChildNodes: function() {
+      return this.firstChild !== null;
+    },
+    get parentNode() {
+      return this.parentNode_ !== undefined ? this.parentNode_ : wrap(unsafeUnwrap(this).parentNode);
+    },
+    get firstChild() {
+      return this.firstChild_ !== undefined ? this.firstChild_ : wrap(unsafeUnwrap(this).firstChild);
+    },
+    get lastChild() {
+      return this.lastChild_ !== undefined ? this.lastChild_ : wrap(unsafeUnwrap(this).lastChild);
+    },
+    get nextSibling() {
+      return this.nextSibling_ !== undefined ? this.nextSibling_ : wrap(unsafeUnwrap(this).nextSibling);
+    },
+    get previousSibling() {
+      return this.previousSibling_ !== undefined ? this.previousSibling_ : wrap(unsafeUnwrap(this).previousSibling);
+    },
+    get parentElement() {
+      var p = this.parentNode;
+      while (p && p.nodeType !== Node.ELEMENT_NODE) {
+        p = p.parentNode;
+      }
+      return p;
+    },
+    get textContent() {
+      var s = "";
+      for (var child = this.firstChild; child; child = child.nextSibling) {
+        if (child.nodeType != Node.COMMENT_NODE) {
+          s += child.textContent;
+        }
+      }
+      return s;
+    },
+    set textContent(textContent) {
+      if (textContent == null) textContent = "";
+      var removedNodes = snapshotNodeList(this.childNodes);
+      if (this.invalidateShadowRenderer()) {
+        removeAllChildNodes(this);
+        if (textContent !== "") {
+          var textNode = unsafeUnwrap(this).ownerDocument.createTextNode(textContent);
+          this.appendChild(textNode);
+        }
+      } else {
+        clearChildNodes(this);
+        unsafeUnwrap(this).textContent = textContent;
+      }
+      var addedNodes = snapshotNodeList(this.childNodes);
+      enqueueMutation(this, "childList", {
+        addedNodes: addedNodes,
+        removedNodes: removedNodes
+      });
+      nodesWereRemoved(removedNodes);
+      nodesWereAdded(addedNodes, this);
+    },
+    get childNodes() {
+      var wrapperList = new NodeList();
+      var i = 0;
+      for (var child = this.firstChild; child; child = child.nextSibling) {
+        wrapperList[i++] = child;
+      }
+      wrapperList.length = i;
+      return wrapperList;
+    },
+    cloneNode: function(deep) {
+      return cloneNode(this, deep);
+    },
+    contains: function(child) {
+      return contains(this, wrapIfNeeded(child));
+    },
+    compareDocumentPosition: function(otherNode) {
+      return originalCompareDocumentPosition.call(unsafeUnwrap(this), unwrapIfNeeded(otherNode));
+    },
+    isEqualNode: function(otherNode) {
+      return originalIsEqualNode.call(unsafeUnwrap(this), unwrapIfNeeded(otherNode));
+    },
+    normalize: function() {
+      var nodes = snapshotNodeList(this.childNodes);
+      var remNodes = [];
+      var s = "";
+      var modNode;
+      for (var i = 0, n; i < nodes.length; i++) {
+        n = nodes[i];
+        if (n.nodeType === Node.TEXT_NODE) {
+          if (!modNode && !n.data.length) this.removeChild(n); else if (!modNode) modNode = n; else {
+            s += n.data;
+            remNodes.push(n);
+          }
+        } else {
+          if (modNode && remNodes.length) {
+            modNode.data += s;
+            cleanupNodes(remNodes);
+          }
+          remNodes = [];
+          s = "";
+          modNode = null;
+          if (n.childNodes.length) n.normalize();
+        }
+      }
+      if (modNode && remNodes.length) {
+        modNode.data += s;
+        cleanupNodes(remNodes);
+      }
+    }
+  });
+  defineWrapGetter(Node, "ownerDocument");
+  registerWrapper(OriginalNode, Node, document.createDocumentFragment());
+  delete Node.prototype.querySelector;
+  delete Node.prototype.querySelectorAll;
+  Node.prototype = mixin(Object.create(EventTarget.prototype), Node.prototype);
+  scope.cloneNode = cloneNode;
+  scope.nodeWasAdded = nodeWasAdded;
+  scope.nodeWasRemoved = nodeWasRemoved;
+  scope.nodesWereAdded = nodesWereAdded;
+  scope.nodesWereRemoved = nodesWereRemoved;
+  scope.originalInsertBefore = originalInsertBefore;
+  scope.originalRemoveChild = originalRemoveChild;
+  scope.snapshotNodeList = snapshotNodeList;
+  scope.wrappers.Node = Node;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var HTMLCollection = scope.wrappers.HTMLCollection;
+  var NodeList = scope.wrappers.NodeList;
+  var getTreeScope = scope.getTreeScope;
+  var unsafeUnwrap = scope.unsafeUnwrap;
+  var wrap = scope.wrap;
+  var originalDocumentQuerySelector = document.querySelector;
+  var originalElementQuerySelector = document.documentElement.querySelector;
+  var originalDocumentQuerySelectorAll = document.querySelectorAll;
+  var originalElementQuerySelectorAll = document.documentElement.querySelectorAll;
+  var originalDocumentGetElementsByTagName = document.getElementsByTagName;
+  var originalElementGetElementsByTagName = document.documentElement.getElementsByTagName;
+  var originalDocumentGetElementsByTagNameNS = document.getElementsByTagNameNS;
+  var originalElementGetElementsByTagNameNS = document.documentElement.getElementsByTagNameNS;
+  var OriginalElement = window.Element;
+  var OriginalDocument = window.HTMLDocument || window.Document;
+  function filterNodeList(list, index, result, deep) {
+    var wrappedItem = null;
+    var root = null;
+    for (var i = 0, length = list.length; i < length; i++) {
+      wrappedItem = wrap(list[i]);
+      if (!deep && (root = getTreeScope(wrappedItem).root)) {
+        if (root instanceof scope.wrappers.ShadowRoot) {
+          continue;
+        }
+      }
+      result[index++] = wrappedItem;
+    }
+    return index;
+  }
+  function shimSelector(selector) {
+    return String(selector).replace(/\/deep\/|::shadow|>>>/g, " ");
+  }
+  function shimMatchesSelector(selector) {
+    return String(selector).replace(/:host\(([^\s]+)\)/g, "$1").replace(/([^\s]):host/g, "$1").replace(":host", "*").replace(/\^|\/shadow\/|\/shadow-deep\/|::shadow|\/deep\/|::content|>>>/g, " ");
+  }
+  function findOne(node, selector) {
+    var m, el = node.firstElementChild;
+    while (el) {
+      if (el.matches(selector)) return el;
+      m = findOne(el, selector);
+      if (m) return m;
+      el = el.nextElementSibling;
+    }
+    return null;
+  }
+  function matchesSelector(el, selector) {
+    return el.matches(selector);
+  }
+  var XHTML_NS = "http://www.w3.org/1999/xhtml";
+  function matchesTagName(el, localName, localNameLowerCase) {
+    var ln = el.localName;
+    return ln === localName || ln === localNameLowerCase && el.namespaceURI === XHTML_NS;
+  }
+  function matchesEveryThing() {
+    return true;
+  }
+  function matchesLocalNameOnly(el, ns, localName) {
+    return el.localName === localName;
+  }
+  function matchesNameSpace(el, ns) {
+    return el.namespaceURI === ns;
+  }
+  function matchesLocalNameNS(el, ns, localName) {
+    return el.namespaceURI === ns && el.localName === localName;
+  }
+  function findElements(node, index, result, p, arg0, arg1) {
+    var el = node.firstElementChild;
+    while (el) {
+      if (p(el, arg0, arg1)) result[index++] = el;
+      index = findElements(el, index, result, p, arg0, arg1);
+      el = el.nextElementSibling;
+    }
+    return index;
+  }
+  function querySelectorAllFiltered(p, index, result, selector, deep) {
+    var target = unsafeUnwrap(this);
+    var list;
+    var root = getTreeScope(this).root;
+    if (root instanceof scope.wrappers.ShadowRoot) {
+      return findElements(this, index, result, p, selector, null);
+    } else if (target instanceof OriginalElement) {
+      list = originalElementQuerySelectorAll.call(target, selector);
+    } else if (target instanceof OriginalDocument) {
+      list = originalDocumentQuerySelectorAll.call(target, selector);
+    } else {
+      return findElements(this, index, result, p, selector, null);
+    }
+    return filterNodeList(list, index, result, deep);
+  }
+  var SelectorsInterface = {
+    querySelector: function(selector) {
+      var shimmed = shimSelector(selector);
+      var deep = shimmed !== selector;
+      selector = shimmed;
+      var target = unsafeUnwrap(this);
+      var wrappedItem;
+      var root = getTreeScope(this).root;
+      if (root instanceof scope.wrappers.ShadowRoot) {
+        return findOne(this, selector);
+      } else if (target instanceof OriginalElement) {
+        wrappedItem = wrap(originalElementQuerySelector.call(target, selector));
+      } else if (target instanceof OriginalDocument) {
+        wrappedItem = wrap(originalDocumentQuerySelector.call(target, selector));
+      } else {
+        return findOne(this, selector);
+      }
+      if (!wrappedItem) {
+        return wrappedItem;
+      } else if (!deep && (root = getTreeScope(wrappedItem).root)) {
+        if (root instanceof scope.wrappers.ShadowRoot) {
+          return findOne(this, selector);
+        }
+      }
+      return wrappedItem;
+    },
+    querySelectorAll: function(selector) {
+      var shimmed = shimSelector(selector);
+      var deep = shimmed !== selector;
+      selector = shimmed;
+      var result = new NodeList();
+      result.length = querySelectorAllFiltered.call(this, matchesSelector, 0, result, selector, deep);
+      return result;
+    }
+  };
+  var MatchesInterface = {
+    matches: function(selector) {
+      selector = shimMatchesSelector(selector);
+      return scope.originalMatches.call(unsafeUnwrap(this), selector);
+    }
+  };
+  function getElementsByTagNameFiltered(p, index, result, localName, lowercase) {
+    var target = unsafeUnwrap(this);
+    var list;
+    var root = getTreeScope(this).root;
+    if (root instanceof scope.wrappers.ShadowRoot) {
+      return findElements(this, index, result, p, localName, lowercase);
+    } else if (target instanceof OriginalElement) {
+      list = originalElementGetElementsByTagName.call(target, localName, lowercase);
+    } else if (target instanceof OriginalDocument) {
+      list = originalDocumentGetElementsByTagName.call(target, localName, lowercase);
+    } else {
+      return findElements(this, index, result, p, localName, lowercase);
+    }
+    return filterNodeList(list, index, result, false);
+  }
+  function getElementsByTagNameNSFiltered(p, index, result, ns, localName) {
+    var target = unsafeUnwrap(this);
+    var list;
+    var root = getTreeScope(this).root;
+    if (root instanceof scope.wrappers.ShadowRoot) {
+      return findElements(this, index, result, p, ns, localName);
+    } else if (target instanceof OriginalElement) {
+      list = originalElementGetElementsByTagNameNS.call(target, ns, localName);
+    } else if (target instanceof OriginalDocument) {
+      list = originalDocumentGetElementsByTagNameNS.call(target, ns, localName);
+    } else {
+      return findElements(this, index, result, p, ns, localName);
+    }
+    return filterNodeList(list, index, result, false);
+  }
+  var GetElementsByInterface = {
+    getElementsByTagName: function(localName) {
+      var result = new HTMLCollection();
+      var match = localName === "*" ? matchesEveryThing : matchesTagName;
+      result.length = getElementsByTagNameFiltered.call(this, match, 0, result, localName, localName.toLowerCase());
+      return result;
+    },
+    getElementsByClassName: function(className) {
+      return this.querySelectorAll("." + className);
+    },
+    getElementsByTagNameNS: function(ns, localName) {
+      var result = new HTMLCollection();
+      var match = null;
+      if (ns === "*") {
+        match = localName === "*" ? matchesEveryThing : matchesLocalNameOnly;
+      } else {
+        match = localName === "*" ? matchesNameSpace : matchesLocalNameNS;
+      }
+      result.length = getElementsByTagNameNSFiltered.call(this, match, 0, result, ns || null, localName);
+      return result;
+    }
+  };
+  scope.GetElementsByInterface = GetElementsByInterface;
+  scope.SelectorsInterface = SelectorsInterface;
+  scope.MatchesInterface = MatchesInterface;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var NodeList = scope.wrappers.NodeList;
+  function forwardElement(node) {
+    while (node && node.nodeType !== Node.ELEMENT_NODE) {
+      node = node.nextSibling;
+    }
+    return node;
+  }
+  function backwardsElement(node) {
+    while (node && node.nodeType !== Node.ELEMENT_NODE) {
+      node = node.previousSibling;
+    }
+    return node;
+  }
+  var ParentNodeInterface = {
+    get firstElementChild() {
+      return forwardElement(this.firstChild);
+    },
+    get lastElementChild() {
+      return backwardsElement(this.lastChild);
+    },
+    get childElementCount() {
+      var count = 0;
+      for (var child = this.firstElementChild; child; child = child.nextElementSibling) {
+        count++;
+      }
+      return count;
+    },
+    get children() {
+      var wrapperList = new NodeList();
+      var i = 0;
+      for (var child = this.firstElementChild; child; child = child.nextElementSibling) {
+        wrapperList[i++] = child;
+      }
+      wrapperList.length = i;
+      return wrapperList;
+    },
+    remove: function() {
+      var p = this.parentNode;
+      if (p) p.removeChild(this);
+    }
+  };
+  var ChildNodeInterface = {
+    get nextElementSibling() {
+      return forwardElement(this.nextSibling);
+    },
+    get previousElementSibling() {
+      return backwardsElement(this.previousSibling);
+    }
+  };
+  var NonElementParentNodeInterface = {
+    getElementById: function(id) {
+      if (/[ \t\n\r\f]/.test(id)) return null;
+      return this.querySelector('[id="' + id + '"]');
+    }
+  };
+  scope.ChildNodeInterface = ChildNodeInterface;
+  scope.NonElementParentNodeInterface = NonElementParentNodeInterface;
+  scope.ParentNodeInterface = ParentNodeInterface;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var ChildNodeInterface = scope.ChildNodeInterface;
+  var Node = scope.wrappers.Node;
+  var enqueueMutation = scope.enqueueMutation;
+  var mixin = scope.mixin;
+  var registerWrapper = scope.registerWrapper;
+  var unsafeUnwrap = scope.unsafeUnwrap;
+  var OriginalCharacterData = window.CharacterData;
+  function CharacterData(node) {
+    Node.call(this, node);
+  }
+  CharacterData.prototype = Object.create(Node.prototype);
+  mixin(CharacterData.prototype, {
+    get nodeValue() {
+      return this.data;
+    },
+    set nodeValue(data) {
+      this.data = data;
+    },
+    get textContent() {
+      return this.data;
+    },
+    set textContent(value) {
+      this.data = value;
+    },
+    get data() {
+      return unsafeUnwrap(this).data;
+    },
+    set data(value) {
+      var oldValue = unsafeUnwrap(this).data;
+      enqueueMutation(this, "characterData", {
+        oldValue: oldValue
+      });
+      unsafeUnwrap(this).data = value;
+    }
+  });
+  mixin(CharacterData.prototype, ChildNodeInterface);
+  registerWrapper(OriginalCharacterData, CharacterData, document.createTextNode(""));
+  scope.wrappers.CharacterData = CharacterData;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var CharacterData = scope.wrappers.CharacterData;
+  var enqueueMutation = scope.enqueueMutation;
+  var mixin = scope.mixin;
+  var registerWrapper = scope.registerWrapper;
+  function toUInt32(x) {
+    return x >>> 0;
+  }
+  var OriginalText = window.Text;
+  function Text(node) {
+    CharacterData.call(this, node);
+  }
+  Text.prototype = Object.create(CharacterData.prototype);
+  mixin(Text.prototype, {
+    splitText: function(offset) {
+      offset = toUInt32(offset);
+      var s = this.data;
+      if (offset > s.length) throw new Error("IndexSizeError");
+      var head = s.slice(0, offset);
+      var tail = s.slice(offset);
+      this.data = head;
+      var newTextNode = this.ownerDocument.createTextNode(tail);
+      if (this.parentNode) this.parentNode.insertBefore(newTextNode, this.nextSibling);
+      return newTextNode;
+    }
+  });
+  registerWrapper(OriginalText, Text, document.createTextNode(""));
+  scope.wrappers.Text = Text;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  if (!window.DOMTokenList) {
+    console.warn("Missing DOMTokenList prototype, please include a " + "compatible classList polyfill such as http://goo.gl/uTcepH.");
+    return;
+  }
+  var unsafeUnwrap = scope.unsafeUnwrap;
+  var enqueueMutation = scope.enqueueMutation;
+  function getClass(el) {
+    return unsafeUnwrap(el).getAttribute("class");
+  }
+  function enqueueClassAttributeChange(el, oldValue) {
+    enqueueMutation(el, "attributes", {
+      name: "class",
+      namespace: null,
+      oldValue: oldValue
+    });
+  }
+  function invalidateClass(el) {
+    scope.invalidateRendererBasedOnAttribute(el, "class");
+  }
+  function changeClass(tokenList, method, args) {
+    var ownerElement = tokenList.ownerElement_;
+    if (ownerElement == null) {
+      return method.apply(tokenList, args);
+    }
+    var oldValue = getClass(ownerElement);
+    var retv = method.apply(tokenList, args);
+    if (getClass(ownerElement) !== oldValue) {
+      enqueueClassAttributeChange(ownerElement, oldValue);
+      invalidateClass(ownerElement);
+    }
+    return retv;
+  }
+  var oldAdd = DOMTokenList.prototype.add;
+  DOMTokenList.prototype.add = function() {
+    changeClass(this, oldAdd, arguments);
+  };
+  var oldRemove = DOMTokenList.prototype.remove;
+  DOMTokenList.prototype.remove = function() {
+    changeClass(this, oldRemove, arguments);
+  };
+  var oldToggle = DOMTokenList.prototype.toggle;
+  DOMTokenList.prototype.toggle = function() {
+    return changeClass(this, oldToggle, arguments);
+  };
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var ChildNodeInterface = scope.ChildNodeInterface;
+  var GetElementsByInterface = scope.GetElementsByInterface;
+  var Node = scope.wrappers.Node;
+  var ParentNodeInterface = scope.ParentNodeInterface;
+  var SelectorsInterface = scope.SelectorsInterface;
+  var MatchesInterface = scope.MatchesInterface;
+  var addWrapNodeListMethod = scope.addWrapNodeListMethod;
+  var enqueueMutation = scope.enqueueMutation;
+  var mixin = scope.mixin;
+  var oneOf = scope.oneOf;
+  var registerWrapper = scope.registerWrapper;
+  var unsafeUnwrap = scope.unsafeUnwrap;
+  var wrappers = scope.wrappers;
+  var OriginalElement = window.Element;
+  var matchesNames = [ "matches", "mozMatchesSelector", "msMatchesSelector", "webkitMatchesSelector" ].filter(function(name) {
+    return OriginalElement.prototype[name];
+  });
+  var matchesName = matchesNames[0];
+  var originalMatches = OriginalElement.prototype[matchesName];
+  function invalidateRendererBasedOnAttribute(element, name) {
+    var p = element.parentNode;
+    if (!p || !p.shadowRoot) return;
+    var renderer = scope.getRendererForHost(p);
+    if (renderer.dependsOnAttribute(name)) renderer.invalidate();
+  }
+  function enqueAttributeChange(element, name, oldValue) {
+    enqueueMutation(element, "attributes", {
+      name: name,
+      namespace: null,
+      oldValue: oldValue
+    });
+  }
+  var classListTable = new WeakMap();
+  function Element(node) {
+    Node.call(this, node);
+  }
+  Element.prototype = Object.create(Node.prototype);
+  mixin(Element.prototype, {
+    createShadowRoot: function() {
+      var newShadowRoot = new wrappers.ShadowRoot(this);
+      unsafeUnwrap(this).polymerShadowRoot_ = newShadowRoot;
+      var renderer = scope.getRendererForHost(this);
+      renderer.invalidate();
+      return newShadowRoot;
+    },
+    get shadowRoot() {
+      return unsafeUnwrap(this).polymerShadowRoot_ || null;
+    },
+    setAttribute: function(name, value) {
+      var oldValue = unsafeUnwrap(this).getAttribute(name);
+      unsafeUnwrap(this).setAttribute(name, value);
+      enqueAttributeChange(this, name, oldValue);
+      invalidateRendererBasedOnAttribute(this, name);
+    },
+    removeAttribute: function(name) {
+      var oldValue = unsafeUnwrap(this).getAttribute(name);
+      unsafeUnwrap(this).removeAttribute(name);
+      enqueAttributeChange(this, name, oldValue);
+      invalidateRendererBasedOnAttribute(this, name);
+    },
+    get classList() {
+      var list = classListTable.get(this);
+      if (!list) {
+        list = unsafeUnwrap(this).classList;
+        if (!list) return;
+        list.ownerElement_ = this;
+        classListTable.set(this, list);
+      }
+      return list;
+    },
+    get className() {
+      return unsafeUnwrap(this).className;
+    },
+    set className(v) {
+      this.setAttribute("class", v);
+    },
+    get id() {
+      return unsafeUnwrap(this).id;
+    },
+    set id(v) {
+      this.setAttribute("id", v);
+    }
+  });
+  matchesNames.forEach(function(name) {
+    if (name !== "matches") {
+      Element.prototype[name] = function(selector) {
+        return this.matches(selector);
+      };
+    }
+  });
+  if (OriginalElement.prototype.webkitCreateShadowRoot) {
+    Element.prototype.webkitCreateShadowRoot = Element.prototype.createShadowRoot;
+  }
+  mixin(Element.prototype, ChildNodeInterface);
+  mixin(Element.prototype, GetElementsByInterface);
+  mixin(Element.prototype, ParentNodeInterface);
+  mixin(Element.prototype, SelectorsInterface);
+  mixin(Element.prototype, MatchesInterface);
+  registerWrapper(OriginalElement, Element, document.createElementNS(null, "x"));
+  scope.invalidateRendererBasedOnAttribute = invalidateRendererBasedOnAttribute;
+  scope.matchesNames = matchesNames;
+  scope.originalMatches = originalMatches;
+  scope.wrappers.Element = Element;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var Element = scope.wrappers.Element;
+  var defineGetter = scope.defineGetter;
+  var enqueueMutation = scope.enqueueMutation;
+  var mixin = scope.mixin;
+  var nodesWereAdded = scope.nodesWereAdded;
+  var nodesWereRemoved = scope.nodesWereRemoved;
+  var registerWrapper = scope.registerWrapper;
+  var snapshotNodeList = scope.snapshotNodeList;
+  var unsafeUnwrap = scope.unsafeUnwrap;
+  var unwrap = scope.unwrap;
+  var wrap = scope.wrap;
+  var wrappers = scope.wrappers;
+  var escapeAttrRegExp = /[&\u00A0"]/g;
+  var escapeDataRegExp = /[&\u00A0<>]/g;
+  function escapeReplace(c) {
+    switch (c) {
+     case "&":
+      return "&amp;";
+
+     case "<":
+      return "&lt;";
+
+     case ">":
+      return "&gt;";
+
+     case '"':
+      return "&quot;";
+
+     case " ":
+      return "&nbsp;";
+    }
+  }
+  function escapeAttr(s) {
+    return s.replace(escapeAttrRegExp, escapeReplace);
+  }
+  function escapeData(s) {
+    return s.replace(escapeDataRegExp, escapeReplace);
+  }
+  function makeSet(arr) {
+    var set = {};
+    for (var i = 0; i < arr.length; i++) {
+      set[arr[i]] = true;
+    }
+    return set;
+  }
+  var voidElements = makeSet([ "area", "base", "br", "col", "command", "embed", "hr", "img", "input", "keygen", "link", "meta", "param", "source", "track", "wbr" ]);
+  var plaintextParents = makeSet([ "style", "script", "xmp", "iframe", "noembed", "noframes", "plaintext", "noscript" ]);
+  var XHTML_NS = "http://www.w3.org/1999/xhtml";
+  function needsSelfClosingSlash(node) {
+    if (node.namespaceURI !== XHTML_NS) return true;
+    var doctype = node.ownerDocument.doctype;
+    return doctype && doctype.publicId && doctype.systemId;
+  }
+  function getOuterHTML(node, parentNode) {
+    switch (node.nodeType) {
+     case Node.ELEMENT_NODE:
+      var tagName = node.tagName.toLowerCase();
+      var s = "<" + tagName;
+      var attrs = node.attributes;
+      for (var i = 0, attr; attr = attrs[i]; i++) {
+        s += " " + attr.name + '="' + escapeAttr(attr.value) + '"';
+      }
+      if (voidElements[tagName]) {
+        if (needsSelfClosingSlash(node)) s += "/";
+        return s + ">";
+      }
+      return s + ">" + getInnerHTML(node) + "</" + tagName + ">";
+
+     case Node.TEXT_NODE:
+      var data = node.data;
+      if (parentNode && plaintextParents[parentNode.localName]) return data;
+      return escapeData(data);
+
+     case Node.COMMENT_NODE:
+      return "<!--" + node.data + "-->";
+
+     default:
+      console.error(node);
+      throw new Error("not implemented");
+    }
+  }
+  function getInnerHTML(node) {
+    if (node instanceof wrappers.HTMLTemplateElement) node = node.content;
+    var s = "";
+    for (var child = node.firstChild; child; child = child.nextSibling) {
+      s += getOuterHTML(child, node);
+    }
+    return s;
+  }
+  function setInnerHTML(node, value, opt_tagName) {
+    var tagName = opt_tagName || "div";
+    node.textContent = "";
+    var tempElement = unwrap(node.ownerDocument.createElement(tagName));
+    tempElement.innerHTML = value;
+    var firstChild;
+    while (firstChild = tempElement.firstChild) {
+      node.appendChild(wrap(firstChild));
+    }
+  }
+  var oldIe = /MSIE/.test(navigator.userAgent);
+  var OriginalHTMLElement = window.HTMLElement;
+  var OriginalHTMLTemplateElement = window.HTMLTemplateElement;
+  function HTMLElement(node) {
+    Element.call(this, node);
+  }
+  HTMLElement.prototype = Object.create(Element.prototype);
+  mixin(HTMLElement.prototype, {
+    get innerHTML() {
+      return getInnerHTML(this);
+    },
+    set innerHTML(value) {
+      if (oldIe && plaintextParents[this.localName]) {
+        this.textContent = value;
+        return;
+      }
+      var removedNodes = snapshotNodeList(this.childNodes);
+      if (this.invalidateShadowRenderer()) {
+        if (this instanceof wrappers.HTMLTemplateElement) setInnerHTML(this.content, value); else setInnerHTML(this, value, this.tagName);
+      } else if (!OriginalHTMLTemplateElement && this instanceof wrappers.HTMLTemplateElement) {
+        setInnerHTML(this.content, value);
+      } else {
+        unsafeUnwrap(this).innerHTML = value;
+      }
+      var addedNodes = snapshotNodeList(this.childNodes);
+      enqueueMutation(this, "childList", {
+        addedNodes: addedNodes,
+        removedNodes: removedNodes
+      });
+      nodesWereRemoved(removedNodes);
+      nodesWereAdded(addedNodes, this);
+    },
+    get outerHTML() {
+      return getOuterHTML(this, this.parentNode);
+    },
+    set outerHTML(value) {
+      var p = this.parentNode;
+      if (p) {
+        p.invalidateShadowRenderer();
+        var df = frag(p, value);
+        p.replaceChild(df, this);
+      }
+    },
+    insertAdjacentHTML: function(position, text) {
+      var contextElement, refNode;
+      switch (String(position).toLowerCase()) {
+       case "beforebegin":
+        contextElement = this.parentNode;
+        refNode = this;
+        break;
+
+       case "afterend":
+        contextElement = this.parentNode;
+        refNode = this.nextSibling;
+        break;
+
+       case "afterbegin":
+        contextElement = this;
+        refNode = this.firstChild;
+        break;
+
+       case "beforeend":
+        contextElement = this;
+        refNode = null;
+        break;
+
+       default:
+        return;
+      }
+      var df = frag(contextElement, text);
+      contextElement.insertBefore(df, refNode);
+    },
+    get hidden() {
+      return this.hasAttribute("hidden");
+    },
+    set hidden(v) {
+      if (v) {
+        this.setAttribute("hidden", "");
+      } else {
+        this.removeAttribute("hidden");
+      }
+    }
+  });
+  function frag(contextElement, html) {
+    var p = unwrap(contextElement.cloneNode(false));
+    p.innerHTML = html;
+    var df = unwrap(document.createDocumentFragment());
+    var c;
+    while (c = p.firstChild) {
+      df.appendChild(c);
+    }
+    return wrap(df);
+  }
+  function getter(name) {
+    return function() {
+      scope.renderAllPending();
+      return unsafeUnwrap(this)[name];
+    };
+  }
+  function getterRequiresRendering(name) {
+    defineGetter(HTMLElement, name, getter(name));
+  }
+  [ "clientHeight", "clientLeft", "clientTop", "clientWidth", "offsetHeight", "offsetLeft", "offsetTop", "offsetWidth", "scrollHeight", "scrollWidth" ].forEach(getterRequiresRendering);
+  function getterAndSetterRequiresRendering(name) {
+    Object.defineProperty(HTMLElement.prototype, name, {
+      get: getter(name),
+      set: function(v) {
+        scope.renderAllPending();
+        unsafeUnwrap(this)[name] = v;
+      },
+      configurable: true,
+      enumerable: true
+    });
+  }
+  [ "scrollLeft", "scrollTop" ].forEach(getterAndSetterRequiresRendering);
+  function methodRequiresRendering(name) {
+    Object.defineProperty(HTMLElement.prototype, name, {
+      value: function() {
+        scope.renderAllPending();
+        return unsafeUnwrap(this)[name].apply(unsafeUnwrap(this), arguments);
+      },
+      configurable: true,
+      enumerable: true
+    });
+  }
+  [ "focus", "getBoundingClientRect", "getClientRects", "scrollIntoView" ].forEach(methodRequiresRendering);
+  registerWrapper(OriginalHTMLElement, HTMLElement, document.createElement("b"));
+  scope.wrappers.HTMLElement = HTMLElement;
+  scope.getInnerHTML = getInnerHTML;
+  scope.setInnerHTML = setInnerHTML;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var HTMLElement = scope.wrappers.HTMLElement;
+  var mixin = scope.mixin;
+  var registerWrapper = scope.registerWrapper;
+  var unsafeUnwrap = scope.unsafeUnwrap;
+  var wrap = scope.wrap;
+  var OriginalHTMLCanvasElement = window.HTMLCanvasElement;
+  function HTMLCanvasElement(node) {
+    HTMLElement.call(this, node);
+  }
+  HTMLCanvasElement.prototype = Object.create(HTMLElement.prototype);
+  mixin(HTMLCanvasElement.prototype, {
+    getContext: function() {
+      var context = unsafeUnwrap(this).getContext.apply(unsafeUnwrap(this), arguments);
+      return context && wrap(context);
+    }
+  });
+  registerWrapper(OriginalHTMLCanvasElement, HTMLCanvasElement, document.createElement("canvas"));
+  scope.wrappers.HTMLCanvasElement = HTMLCanvasElement;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var HTMLElement = scope.wrappers.HTMLElement;
+  var mixin = scope.mixin;
+  var registerWrapper = scope.registerWrapper;
+  var OriginalHTMLContentElement = window.HTMLContentElement;
+  function HTMLContentElement(node) {
+    HTMLElement.call(this, node);
+  }
+  HTMLContentElement.prototype = Object.create(HTMLElement.prototype);
+  mixin(HTMLContentElement.prototype, {
+    constructor: HTMLContentElement,
+    get select() {
+      return this.getAttribute("select");
+    },
+    set select(value) {
+      this.setAttribute("select", value);
+    },
+    setAttribute: function(n, v) {
+      HTMLElement.prototype.setAttribute.call(this, n, v);
+      if (String(n).toLowerCase() === "select") this.invalidateShadowRenderer(true);
+    }
+  });
+  if (OriginalHTMLContentElement) registerWrapper(OriginalHTMLContentElement, HTMLContentElement);
+  scope.wrappers.HTMLContentElement = HTMLContentElement;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var HTMLElement = scope.wrappers.HTMLElement;
+  var mixin = scope.mixin;
+  var registerWrapper = scope.registerWrapper;
+  var wrapHTMLCollection = scope.wrapHTMLCollection;
+  var unwrap = scope.unwrap;
+  var OriginalHTMLFormElement = window.HTMLFormElement;
+  function HTMLFormElement(node) {
+    HTMLElement.call(this, node);
+  }
+  HTMLFormElement.prototype = Object.create(HTMLElement.prototype);
+  mixin(HTMLFormElement.prototype, {
+    get elements() {
+      return wrapHTMLCollection(unwrap(this).elements);
+    }
+  });
+  registerWrapper(OriginalHTMLFormElement, HTMLFormElement, document.createElement("form"));
+  scope.wrappers.HTMLFormElement = HTMLFormElement;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var HTMLElement = scope.wrappers.HTMLElement;
+  var registerWrapper = scope.registerWrapper;
+  var unwrap = scope.unwrap;
+  var rewrap = scope.rewrap;
+  var OriginalHTMLImageElement = window.HTMLImageElement;
+  function HTMLImageElement(node) {
+    HTMLElement.call(this, node);
+  }
+  HTMLImageElement.prototype = Object.create(HTMLElement.prototype);
+  registerWrapper(OriginalHTMLImageElement, HTMLImageElement, document.createElement("img"));
+  function Image(width, height) {
+    if (!(this instanceof Image)) {
+      throw new TypeError("DOM object constructor cannot be called as a function.");
+    }
+    var node = unwrap(document.createElement("img"));
+    HTMLElement.call(this, node);
+    rewrap(node, this);
+    if (width !== undefined) node.width = width;
+    if (height !== undefined) node.height = height;
+  }
+  Image.prototype = HTMLImageElement.prototype;
+  scope.wrappers.HTMLImageElement = HTMLImageElement;
+  scope.wrappers.Image = Image;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var HTMLElement = scope.wrappers.HTMLElement;
+  var mixin = scope.mixin;
+  var NodeList = scope.wrappers.NodeList;
+  var registerWrapper = scope.registerWrapper;
+  var OriginalHTMLShadowElement = window.HTMLShadowElement;
+  function HTMLShadowElement(node) {
+    HTMLElement.call(this, node);
+  }
+  HTMLShadowElement.prototype = Object.create(HTMLElement.prototype);
+  HTMLShadowElement.prototype.constructor = HTMLShadowElement;
+  if (OriginalHTMLShadowElement) registerWrapper(OriginalHTMLShadowElement, HTMLShadowElement);
+  scope.wrappers.HTMLShadowElement = HTMLShadowElement;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var HTMLElement = scope.wrappers.HTMLElement;
+  var mixin = scope.mixin;
+  var registerWrapper = scope.registerWrapper;
+  var unsafeUnwrap = scope.unsafeUnwrap;
+  var unwrap = scope.unwrap;
+  var wrap = scope.wrap;
+  var contentTable = new WeakMap();
+  var templateContentsOwnerTable = new WeakMap();
+  function getTemplateContentsOwner(doc) {
+    if (!doc.defaultView) return doc;
+    var d = templateContentsOwnerTable.get(doc);
+    if (!d) {
+      d = doc.implementation.createHTMLDocument("");
+      while (d.lastChild) {
+        d.removeChild(d.lastChild);
+      }
+      templateContentsOwnerTable.set(doc, d);
+    }
+    return d;
+  }
+  function extractContent(templateElement) {
+    var doc = getTemplateContentsOwner(templateElement.ownerDocument);
+    var df = unwrap(doc.createDocumentFragment());
+    var child;
+    while (child = templateElement.firstChild) {
+      df.appendChild(child);
+    }
+    return df;
+  }
+  var OriginalHTMLTemplateElement = window.HTMLTemplateElement;
+  function HTMLTemplateElement(node) {
+    HTMLElement.call(this, node);
+    if (!OriginalHTMLTemplateElement) {
+      var content = extractContent(node);
+      contentTable.set(this, wrap(content));
+    }
+  }
+  HTMLTemplateElement.prototype = Object.create(HTMLElement.prototype);
+  mixin(HTMLTemplateElement.prototype, {
+    constructor: HTMLTemplateElement,
+    get content() {
+      if (OriginalHTMLTemplateElement) return wrap(unsafeUnwrap(this).content);
+      return contentTable.get(this);
+    }
+  });
+  if (OriginalHTMLTemplateElement) registerWrapper(OriginalHTMLTemplateElement, HTMLTemplateElement);
+  scope.wrappers.HTMLTemplateElement = HTMLTemplateElement;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var HTMLElement = scope.wrappers.HTMLElement;
+  var registerWrapper = scope.registerWrapper;
+  var OriginalHTMLMediaElement = window.HTMLMediaElement;
+  if (!OriginalHTMLMediaElement) return;
+  function HTMLMediaElement(node) {
+    HTMLElement.call(this, node);
+  }
+  HTMLMediaElement.prototype = Object.create(HTMLElement.prototype);
+  registerWrapper(OriginalHTMLMediaElement, HTMLMediaElement, document.createElement("audio"));
+  scope.wrappers.HTMLMediaElement = HTMLMediaElement;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var HTMLMediaElement = scope.wrappers.HTMLMediaElement;
+  var registerWrapper = scope.registerWrapper;
+  var unwrap = scope.unwrap;
+  var rewrap = scope.rewrap;
+  var OriginalHTMLAudioElement = window.HTMLAudioElement;
+  if (!OriginalHTMLAudioElement) return;
+  function HTMLAudioElement(node) {
+    HTMLMediaElement.call(this, node);
+  }
+  HTMLAudioElement.prototype = Object.create(HTMLMediaElement.prototype);
+  registerWrapper(OriginalHTMLAudioElement, HTMLAudioElement, document.createElement("audio"));
+  function Audio(src) {
+    if (!(this instanceof Audio)) {
+      throw new TypeError("DOM object constructor cannot be called as a function.");
+    }
+    var node = unwrap(document.createElement("audio"));
+    HTMLMediaElement.call(this, node);
+    rewrap(node, this);
+    node.setAttribute("preload", "auto");
+    if (src !== undefined) node.setAttribute("src", src);
+  }
+  Audio.prototype = HTMLAudioElement.prototype;
+  scope.wrappers.HTMLAudioElement = HTMLAudioElement;
+  scope.wrappers.Audio = Audio;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var HTMLElement = scope.wrappers.HTMLElement;
+  var mixin = scope.mixin;
+  var registerWrapper = scope.registerWrapper;
+  var rewrap = scope.rewrap;
+  var unwrap = scope.unwrap;
+  var wrap = scope.wrap;
+  var OriginalHTMLOptionElement = window.HTMLOptionElement;
+  function trimText(s) {
+    return s.replace(/\s+/g, " ").trim();
+  }
+  function HTMLOptionElement(node) {
+    HTMLElement.call(this, node);
+  }
+  HTMLOptionElement.prototype = Object.create(HTMLElement.prototype);
+  mixin(HTMLOptionElement.prototype, {
+    get text() {
+      return trimText(this.textContent);
+    },
+    set text(value) {
+      this.textContent = trimText(String(value));
+    },
+    get form() {
+      return wrap(unwrap(this).form);
+    }
+  });
+  registerWrapper(OriginalHTMLOptionElement, HTMLOptionElement, document.createElement("option"));
+  function Option(text, value, defaultSelected, selected) {
+    if (!(this instanceof Option)) {
+      throw new TypeError("DOM object constructor cannot be called as a function.");
+    }
+    var node = unwrap(document.createElement("option"));
+    HTMLElement.call(this, node);
+    rewrap(node, this);
+    if (text !== undefined) node.text = text;
+    if (value !== undefined) node.setAttribute("value", value);
+    if (defaultSelected === true) node.setAttribute("selected", "");
+    node.selected = selected === true;
+  }
+  Option.prototype = HTMLOptionElement.prototype;
+  scope.wrappers.HTMLOptionElement = HTMLOptionElement;
+  scope.wrappers.Option = Option;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var HTMLElement = scope.wrappers.HTMLElement;
+  var mixin = scope.mixin;
+  var registerWrapper = scope.registerWrapper;
+  var unwrap = scope.unwrap;
+  var wrap = scope.wrap;
+  var OriginalHTMLSelectElement = window.HTMLSelectElement;
+  function HTMLSelectElement(node) {
+    HTMLElement.call(this, node);
+  }
+  HTMLSelectElement.prototype = Object.create(HTMLElement.prototype);
+  mixin(HTMLSelectElement.prototype, {
+    add: function(element, before) {
+      if (typeof before === "object") before = unwrap(before);
+      unwrap(this).add(unwrap(element), before);
+    },
+    remove: function(indexOrNode) {
+      if (indexOrNode === undefined) {
+        HTMLElement.prototype.remove.call(this);
+        return;
+      }
+      if (typeof indexOrNode === "object") indexOrNode = unwrap(indexOrNode);
+      unwrap(this).remove(indexOrNode);
+    },
+    get form() {
+      return wrap(unwrap(this).form);
+    }
+  });
+  registerWrapper(OriginalHTMLSelectElement, HTMLSelectElement, document.createElement("select"));
+  scope.wrappers.HTMLSelectElement = HTMLSelectElement;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var HTMLElement = scope.wrappers.HTMLElement;
+  var mixin = scope.mixin;
+  var registerWrapper = scope.registerWrapper;
+  var unwrap = scope.unwrap;
+  var wrap = scope.wrap;
+  var wrapHTMLCollection = scope.wrapHTMLCollection;
+  var OriginalHTMLTableElement = window.HTMLTableElement;
+  function HTMLTableElement(node) {
+    HTMLElement.call(this, node);
+  }
+  HTMLTableElement.prototype = Object.create(HTMLElement.prototype);
+  mixin(HTMLTableElement.prototype, {
+    get caption() {
+      return wrap(unwrap(this).caption);
+    },
+    createCaption: function() {
+      return wrap(unwrap(this).createCaption());
+    },
+    get tHead() {
+      return wrap(unwrap(this).tHead);
+    },
+    createTHead: function() {
+      return wrap(unwrap(this).createTHead());
+    },
+    createTFoot: function() {
+      return wrap(unwrap(this).createTFoot());
+    },
+    get tFoot() {
+      return wrap(unwrap(this).tFoot);
+    },
+    get tBodies() {
+      return wrapHTMLCollection(unwrap(this).tBodies);
+    },
+    createTBody: function() {
+      return wrap(unwrap(this).createTBody());
+    },
+    get rows() {
+      return wrapHTMLCollection(unwrap(this).rows);
+    },
+    insertRow: function(index) {
+      return wrap(unwrap(this).insertRow(index));
+    }
+  });
+  registerWrapper(OriginalHTMLTableElement, HTMLTableElement, document.createElement("table"));
+  scope.wrappers.HTMLTableElement = HTMLTableElement;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var HTMLElement = scope.wrappers.HTMLElement;
+  var mixin = scope.mixin;
+  var registerWrapper = scope.registerWrapper;
+  var wrapHTMLCollection = scope.wrapHTMLCollection;
+  var unwrap = scope.unwrap;
+  var wrap = scope.wrap;
+  var OriginalHTMLTableSectionElement = window.HTMLTableSectionElement;
+  function HTMLTableSectionElement(node) {
+    HTMLElement.call(this, node);
+  }
+  HTMLTableSectionElement.prototype = Object.create(HTMLElement.prototype);
+  mixin(HTMLTableSectionElement.prototype, {
+    constructor: HTMLTableSectionElement,
+    get rows() {
+      return wrapHTMLCollection(unwrap(this).rows);
+    },
+    insertRow: function(index) {
+      return wrap(unwrap(this).insertRow(index));
+    }
+  });
+  registerWrapper(OriginalHTMLTableSectionElement, HTMLTableSectionElement, document.createElement("thead"));
+  scope.wrappers.HTMLTableSectionElement = HTMLTableSectionElement;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var HTMLElement = scope.wrappers.HTMLElement;
+  var mixin = scope.mixin;
+  var registerWrapper = scope.registerWrapper;
+  var wrapHTMLCollection = scope.wrapHTMLCollection;
+  var unwrap = scope.unwrap;
+  var wrap = scope.wrap;
+  var OriginalHTMLTableRowElement = window.HTMLTableRowElement;
+  function HTMLTableRowElement(node) {
+    HTMLElement.call(this, node);
+  }
+  HTMLTableRowElement.prototype = Object.create(HTMLElement.prototype);
+  mixin(HTMLTableRowElement.prototype, {
+    get cells() {
+      return wrapHTMLCollection(unwrap(this).cells);
+    },
+    insertCell: function(index) {
+      return wrap(unwrap(this).insertCell(index));
+    }
+  });
+  registerWrapper(OriginalHTMLTableRowElement, HTMLTableRowElement, document.createElement("tr"));
+  scope.wrappers.HTMLTableRowElement = HTMLTableRowElement;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var HTMLContentElement = scope.wrappers.HTMLContentElement;
+  var HTMLElement = scope.wrappers.HTMLElement;
+  var HTMLShadowElement = scope.wrappers.HTMLShadowElement;
+  var HTMLTemplateElement = scope.wrappers.HTMLTemplateElement;
+  var mixin = scope.mixin;
+  var registerWrapper = scope.registerWrapper;
+  var OriginalHTMLUnknownElement = window.HTMLUnknownElement;
+  function HTMLUnknownElement(node) {
+    switch (node.localName) {
+     case "content":
+      return new HTMLContentElement(node);
+
+     case "shadow":
+      return new HTMLShadowElement(node);
+
+     case "template":
+      return new HTMLTemplateElement(node);
+    }
+    HTMLElement.call(this, node);
+  }
+  HTMLUnknownElement.prototype = Object.create(HTMLElement.prototype);
+  registerWrapper(OriginalHTMLUnknownElement, HTMLUnknownElement);
+  scope.wrappers.HTMLUnknownElement = HTMLUnknownElement;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var Element = scope.wrappers.Element;
+  var HTMLElement = scope.wrappers.HTMLElement;
+  var registerWrapper = scope.registerWrapper;
+  var defineWrapGetter = scope.defineWrapGetter;
+  var unsafeUnwrap = scope.unsafeUnwrap;
+  var wrap = scope.wrap;
+  var mixin = scope.mixin;
+  var SVG_NS = "http://www.w3.org/2000/svg";
+  var OriginalSVGElement = window.SVGElement;
+  var svgTitleElement = document.createElementNS(SVG_NS, "title");
+  if (!("classList" in svgTitleElement)) {
+    var descr = Object.getOwnPropertyDescriptor(Element.prototype, "classList");
+    Object.defineProperty(HTMLElement.prototype, "classList", descr);
+    delete Element.prototype.classList;
+  }
+  function SVGElement(node) {
+    Element.call(this, node);
+  }
+  SVGElement.prototype = Object.create(Element.prototype);
+  mixin(SVGElement.prototype, {
+    get ownerSVGElement() {
+      return wrap(unsafeUnwrap(this).ownerSVGElement);
+    }
+  });
+  registerWrapper(OriginalSVGElement, SVGElement, document.createElementNS(SVG_NS, "title"));
+  scope.wrappers.SVGElement = SVGElement;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var mixin = scope.mixin;
+  var registerWrapper = scope.registerWrapper;
+  var unwrap = scope.unwrap;
+  var wrap = scope.wrap;
+  var OriginalSVGUseElement = window.SVGUseElement;
+  var SVG_NS = "http://www.w3.org/2000/svg";
+  var gWrapper = wrap(document.createElementNS(SVG_NS, "g"));
+  var useElement = document.createElementNS(SVG_NS, "use");
+  var SVGGElement = gWrapper.constructor;
+  var parentInterfacePrototype = Object.getPrototypeOf(SVGGElement.prototype);
+  var parentInterface = parentInterfacePrototype.constructor;
+  function SVGUseElement(impl) {
+    parentInterface.call(this, impl);
+  }
+  SVGUseElement.prototype = Object.create(parentInterfacePrototype);
+  if ("instanceRoot" in useElement) {
+    mixin(SVGUseElement.prototype, {
+      get instanceRoot() {
+        return wrap(unwrap(this).instanceRoot);
+      },
+      get animatedInstanceRoot() {
+        return wrap(unwrap(this).animatedInstanceRoot);
+      }
+    });
+  }
+  registerWrapper(OriginalSVGUseElement, SVGUseElement, useElement);
+  scope.wrappers.SVGUseElement = SVGUseElement;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var EventTarget = scope.wrappers.EventTarget;
+  var mixin = scope.mixin;
+  var registerWrapper = scope.registerWrapper;
+  var unsafeUnwrap = scope.unsafeUnwrap;
+  var wrap = scope.wrap;
+  var OriginalSVGElementInstance = window.SVGElementInstance;
+  if (!OriginalSVGElementInstance) return;
+  function SVGElementInstance(impl) {
+    EventTarget.call(this, impl);
+  }
+  SVGElementInstance.prototype = Object.create(EventTarget.prototype);
+  mixin(SVGElementInstance.prototype, {
+    get correspondingElement() {
+      return wrap(unsafeUnwrap(this).correspondingElement);
+    },
+    get correspondingUseElement() {
+      return wrap(unsafeUnwrap(this).correspondingUseElement);
+    },
+    get parentNode() {
+      return wrap(unsafeUnwrap(this).parentNode);
+    },
+    get childNodes() {
+      throw new Error("Not implemented");
+    },
+    get firstChild() {
+      return wrap(unsafeUnwrap(this).firstChild);
+    },
+    get lastChild() {
+      return wrap(unsafeUnwrap(this).lastChild);
+    },
+    get previousSibling() {
+      return wrap(unsafeUnwrap(this).previousSibling);
+    },
+    get nextSibling() {
+      return wrap(unsafeUnwrap(this).nextSibling);
+    }
+  });
+  registerWrapper(OriginalSVGElementInstance, SVGElementInstance);
+  scope.wrappers.SVGElementInstance = SVGElementInstance;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var mixin = scope.mixin;
+  var registerWrapper = scope.registerWrapper;
+  var setWrapper = scope.setWrapper;
+  var unsafeUnwrap = scope.unsafeUnwrap;
+  var unwrap = scope.unwrap;
+  var unwrapIfNeeded = scope.unwrapIfNeeded;
+  var wrap = scope.wrap;
+  var OriginalCanvasRenderingContext2D = window.CanvasRenderingContext2D;
+  function CanvasRenderingContext2D(impl) {
+    setWrapper(impl, this);
+  }
+  mixin(CanvasRenderingContext2D.prototype, {
+    get canvas() {
+      return wrap(unsafeUnwrap(this).canvas);
+    },
+    drawImage: function() {
+      arguments[0] = unwrapIfNeeded(arguments[0]);
+      unsafeUnwrap(this).drawImage.apply(unsafeUnwrap(this), arguments);
+    },
+    createPattern: function() {
+      arguments[0] = unwrap(arguments[0]);
+      return unsafeUnwrap(this).createPattern.apply(unsafeUnwrap(this), arguments);
+    }
+  });
+  registerWrapper(OriginalCanvasRenderingContext2D, CanvasRenderingContext2D, document.createElement("canvas").getContext("2d"));
+  scope.wrappers.CanvasRenderingContext2D = CanvasRenderingContext2D;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var addForwardingProperties = scope.addForwardingProperties;
+  var mixin = scope.mixin;
+  var registerWrapper = scope.registerWrapper;
+  var setWrapper = scope.setWrapper;
+  var unsafeUnwrap = scope.unsafeUnwrap;
+  var unwrapIfNeeded = scope.unwrapIfNeeded;
+  var wrap = scope.wrap;
+  var OriginalWebGLRenderingContext = window.WebGLRenderingContext;
+  if (!OriginalWebGLRenderingContext) return;
+  function WebGLRenderingContext(impl) {
+    setWrapper(impl, this);
+  }
+  mixin(WebGLRenderingContext.prototype, {
+    get canvas() {
+      return wrap(unsafeUnwrap(this).canvas);
+    },
+    texImage2D: function() {
+      arguments[5] = unwrapIfNeeded(arguments[5]);
+      unsafeUnwrap(this).texImage2D.apply(unsafeUnwrap(this), arguments);
+    },
+    texSubImage2D: function() {
+      arguments[6] = unwrapIfNeeded(arguments[6]);
+      unsafeUnwrap(this).texSubImage2D.apply(unsafeUnwrap(this), arguments);
+    }
+  });
+  var OriginalWebGLRenderingContextBase = Object.getPrototypeOf(OriginalWebGLRenderingContext.prototype);
+  if (OriginalWebGLRenderingContextBase !== Object.prototype) {
+    addForwardingProperties(OriginalWebGLRenderingContextBase, WebGLRenderingContext.prototype);
+  }
+  var instanceProperties = /WebKit/.test(navigator.userAgent) ? {
+    drawingBufferHeight: null,
+    drawingBufferWidth: null
+  } : {};
+  registerWrapper(OriginalWebGLRenderingContext, WebGLRenderingContext, instanceProperties);
+  scope.wrappers.WebGLRenderingContext = WebGLRenderingContext;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var Node = scope.wrappers.Node;
+  var GetElementsByInterface = scope.GetElementsByInterface;
+  var NonElementParentNodeInterface = scope.NonElementParentNodeInterface;
+  var ParentNodeInterface = scope.ParentNodeInterface;
+  var SelectorsInterface = scope.SelectorsInterface;
+  var mixin = scope.mixin;
+  var registerObject = scope.registerObject;
+  var registerWrapper = scope.registerWrapper;
+  var OriginalDocumentFragment = window.DocumentFragment;
+  function DocumentFragment(node) {
+    Node.call(this, node);
+  }
+  DocumentFragment.prototype = Object.create(Node.prototype);
+  mixin(DocumentFragment.prototype, ParentNodeInterface);
+  mixin(DocumentFragment.prototype, SelectorsInterface);
+  mixin(DocumentFragment.prototype, GetElementsByInterface);
+  mixin(DocumentFragment.prototype, NonElementParentNodeInterface);
+  registerWrapper(OriginalDocumentFragment, DocumentFragment, document.createDocumentFragment());
+  scope.wrappers.DocumentFragment = DocumentFragment;
+  var Comment = registerObject(document.createComment(""));
+  scope.wrappers.Comment = Comment;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var DocumentFragment = scope.wrappers.DocumentFragment;
+  var TreeScope = scope.TreeScope;
+  var elementFromPoint = scope.elementFromPoint;
+  var getInnerHTML = scope.getInnerHTML;
+  var getTreeScope = scope.getTreeScope;
+  var mixin = scope.mixin;
+  var rewrap = scope.rewrap;
+  var setInnerHTML = scope.setInnerHTML;
+  var unsafeUnwrap = scope.unsafeUnwrap;
+  var unwrap = scope.unwrap;
+  var wrap = scope.wrap;
+  var shadowHostTable = new WeakMap();
+  var nextOlderShadowTreeTable = new WeakMap();
+  function ShadowRoot(hostWrapper) {
+    var node = unwrap(unsafeUnwrap(hostWrapper).ownerDocument.createDocumentFragment());
+    DocumentFragment.call(this, node);
+    rewrap(node, this);
+    var oldShadowRoot = hostWrapper.shadowRoot;
+    nextOlderShadowTreeTable.set(this, oldShadowRoot);
+    this.treeScope_ = new TreeScope(this, getTreeScope(oldShadowRoot || hostWrapper));
+    shadowHostTable.set(this, hostWrapper);
+  }
+  ShadowRoot.prototype = Object.create(DocumentFragment.prototype);
+  mixin(ShadowRoot.prototype, {
+    constructor: ShadowRoot,
+    get innerHTML() {
+      return getInnerHTML(this);
+    },
+    set innerHTML(value) {
+      setInnerHTML(this, value);
+      this.invalidateShadowRenderer();
+    },
+    get olderShadowRoot() {
+      return nextOlderShadowTreeTable.get(this) || null;
+    },
+    get host() {
+      return shadowHostTable.get(this) || null;
+    },
+    invalidateShadowRenderer: function() {
+      return shadowHostTable.get(this).invalidateShadowRenderer();
+    },
+    elementFromPoint: function(x, y) {
+      return elementFromPoint(this, this.ownerDocument, x, y);
+    },
+    getSelection: function() {
+      return document.getSelection();
+    },
+    get activeElement() {
+      var unwrappedActiveElement = unwrap(this).ownerDocument.activeElement;
+      if (!unwrappedActiveElement || !unwrappedActiveElement.nodeType) return null;
+      var activeElement = wrap(unwrappedActiveElement);
+      while (!this.contains(activeElement)) {
+        while (activeElement.parentNode) {
+          activeElement = activeElement.parentNode;
+        }
+        if (activeElement.host) {
+          activeElement = activeElement.host;
+        } else {
+          return null;
+        }
+      }
+      return activeElement;
+    }
+  });
+  scope.wrappers.ShadowRoot = ShadowRoot;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var registerWrapper = scope.registerWrapper;
+  var setWrapper = scope.setWrapper;
+  var unsafeUnwrap = scope.unsafeUnwrap;
+  var unwrap = scope.unwrap;
+  var unwrapIfNeeded = scope.unwrapIfNeeded;
+  var wrap = scope.wrap;
+  var getTreeScope = scope.getTreeScope;
+  var OriginalRange = window.Range;
+  var ShadowRoot = scope.wrappers.ShadowRoot;
+  function getHost(node) {
+    var root = getTreeScope(node).root;
+    if (root instanceof ShadowRoot) {
+      return root.host;
+    }
+    return null;
+  }
+  function hostNodeToShadowNode(refNode, offset) {
+    if (refNode.shadowRoot) {
+      offset = Math.min(refNode.childNodes.length - 1, offset);
+      var child = refNode.childNodes[offset];
+      if (child) {
+        var insertionPoint = scope.getDestinationInsertionPoints(child);
+        if (insertionPoint.length > 0) {
+          var parentNode = insertionPoint[0].parentNode;
+          if (parentNode.nodeType == Node.ELEMENT_NODE) {
+            refNode = parentNode;
+          }
+        }
+      }
+    }
+    return refNode;
+  }
+  function shadowNodeToHostNode(node) {
+    node = wrap(node);
+    return getHost(node) || node;
+  }
+  function Range(impl) {
+    setWrapper(impl, this);
+  }
+  Range.prototype = {
+    get startContainer() {
+      return shadowNodeToHostNode(unsafeUnwrap(this).startContainer);
+    },
+    get endContainer() {
+      return shadowNodeToHostNode(unsafeUnwrap(this).endContainer);
+    },
+    get commonAncestorContainer() {
+      return shadowNodeToHostNode(unsafeUnwrap(this).commonAncestorContainer);
+    },
+    setStart: function(refNode, offset) {
+      refNode = hostNodeToShadowNode(refNode, offset);
+      unsafeUnwrap(this).setStart(unwrapIfNeeded(refNode), offset);
+    },
+    setEnd: function(refNode, offset) {
+      refNode = hostNodeToShadowNode(refNode, offset);
+      unsafeUnwrap(this).setEnd(unwrapIfNeeded(refNode), offset);
+    },
+    setStartBefore: function(refNode) {
+      unsafeUnwrap(this).setStartBefore(unwrapIfNeeded(refNode));
+    },
+    setStartAfter: function(refNode) {
+      unsafeUnwrap(this).setStartAfter(unwrapIfNeeded(refNode));
+    },
+    setEndBefore: function(refNode) {
+      unsafeUnwrap(this).setEndBefore(unwrapIfNeeded(refNode));
+    },
+    setEndAfter: function(refNode) {
+      unsafeUnwrap(this).setEndAfter(unwrapIfNeeded(refNode));
+    },
+    selectNode: function(refNode) {
+      unsafeUnwrap(this).selectNode(unwrapIfNeeded(refNode));
+    },
+    selectNodeContents: function(refNode) {
+      unsafeUnwrap(this).selectNodeContents(unwrapIfNeeded(refNode));
+    },
+    compareBoundaryPoints: function(how, sourceRange) {
+      return unsafeUnwrap(this).compareBoundaryPoints(how, unwrap(sourceRange));
+    },
+    extractContents: function() {
+      return wrap(unsafeUnwrap(this).extractContents());
+    },
+    cloneContents: function() {
+      return wrap(unsafeUnwrap(this).cloneContents());
+    },
+    insertNode: function(node) {
+      unsafeUnwrap(this).insertNode(unwrapIfNeeded(node));
+    },
+    surroundContents: function(newParent) {
+      unsafeUnwrap(this).surroundContents(unwrapIfNeeded(newParent));
+    },
+    cloneRange: function() {
+      return wrap(unsafeUnwrap(this).cloneRange());
+    },
+    isPointInRange: function(node, offset) {
+      return unsafeUnwrap(this).isPointInRange(unwrapIfNeeded(node), offset);
+    },
+    comparePoint: function(node, offset) {
+      return unsafeUnwrap(this).comparePoint(unwrapIfNeeded(node), offset);
+    },
+    intersectsNode: function(node) {
+      return unsafeUnwrap(this).intersectsNode(unwrapIfNeeded(node));
+    },
+    toString: function() {
+      return unsafeUnwrap(this).toString();
+    }
+  };
+  if (OriginalRange.prototype.createContextualFragment) {
+    Range.prototype.createContextualFragment = function(html) {
+      return wrap(unsafeUnwrap(this).createContextualFragment(html));
+    };
+  }
+  registerWrapper(window.Range, Range, document.createRange());
+  scope.wrappers.Range = Range;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var Element = scope.wrappers.Element;
+  var HTMLContentElement = scope.wrappers.HTMLContentElement;
+  var HTMLShadowElement = scope.wrappers.HTMLShadowElement;
+  var Node = scope.wrappers.Node;
+  var ShadowRoot = scope.wrappers.ShadowRoot;
+  var assert = scope.assert;
+  var getTreeScope = scope.getTreeScope;
+  var mixin = scope.mixin;
+  var oneOf = scope.oneOf;
+  var unsafeUnwrap = scope.unsafeUnwrap;
+  var unwrap = scope.unwrap;
+  var wrap = scope.wrap;
+  var ArraySplice = scope.ArraySplice;
+  function updateWrapperUpAndSideways(wrapper) {
+    wrapper.previousSibling_ = wrapper.previousSibling;
+    wrapper.nextSibling_ = wrapper.nextSibling;
+    wrapper.parentNode_ = wrapper.parentNode;
+  }
+  function updateWrapperDown(wrapper) {
+    wrapper.firstChild_ = wrapper.firstChild;
+    wrapper.lastChild_ = wrapper.lastChild;
+  }
+  function updateAllChildNodes(parentNodeWrapper) {
+    assert(parentNodeWrapper instanceof Node);
+    for (var childWrapper = parentNodeWrapper.firstChild; childWrapper; childWrapper = childWrapper.nextSibling) {
+      updateWrapperUpAndSideways(childWrapper);
+    }
+    updateWrapperDown(parentNodeWrapper);
+  }
+  function insertBefore(parentNodeWrapper, newChildWrapper, refChildWrapper) {
+    var parentNode = unwrap(parentNodeWrapper);
+    var newChild = unwrap(newChildWrapper);
+    var refChild = refChildWrapper ? unwrap(refChildWrapper) : null;
+    remove(newChildWrapper);
+    updateWrapperUpAndSideways(newChildWrapper);
+    if (!refChildWrapper) {
+      parentNodeWrapper.lastChild_ = parentNodeWrapper.lastChild;
+      if (parentNodeWrapper.lastChild === parentNodeWrapper.firstChild) parentNodeWrapper.firstChild_ = parentNodeWrapper.firstChild;
+      var lastChildWrapper = wrap(parentNode.lastChild);
+      if (lastChildWrapper) lastChildWrapper.nextSibling_ = lastChildWrapper.nextSibling;
+    } else {
+      if (parentNodeWrapper.firstChild === refChildWrapper) parentNodeWrapper.firstChild_ = refChildWrapper;
+      refChildWrapper.previousSibling_ = refChildWrapper.previousSibling;
+    }
+    scope.originalInsertBefore.call(parentNode, newChild, refChild);
+  }
+  function remove(nodeWrapper) {
+    var node = unwrap(nodeWrapper);
+    var parentNode = node.parentNode;
+    if (!parentNode) return;
+    var parentNodeWrapper = wrap(parentNode);
+    updateWrapperUpAndSideways(nodeWrapper);
+    if (nodeWrapper.previousSibling) nodeWrapper.previousSibling.nextSibling_ = nodeWrapper;
+    if (nodeWrapper.nextSibling) nodeWrapper.nextSibling.previousSibling_ = nodeWrapper;
+    if (parentNodeWrapper.lastChild === nodeWrapper) parentNodeWrapper.lastChild_ = nodeWrapper;
+    if (parentNodeWrapper.firstChild === nodeWrapper) parentNodeWrapper.firstChild_ = nodeWrapper;
+    scope.originalRemoveChild.call(parentNode, node);
+  }
+  var distributedNodesTable = new WeakMap();
+  var destinationInsertionPointsTable = new WeakMap();
+  var rendererForHostTable = new WeakMap();
+  function resetDistributedNodes(insertionPoint) {
+    distributedNodesTable.set(insertionPoint, []);
+  }
+  function getDistributedNodes(insertionPoint) {
+    var rv = distributedNodesTable.get(insertionPoint);
+    if (!rv) distributedNodesTable.set(insertionPoint, rv = []);
+    return rv;
+  }
+  function getChildNodesSnapshot(node) {
+    var result = [], i = 0;
+    for (var child = node.firstChild; child; child = child.nextSibling) {
+      result[i++] = child;
+    }
+    return result;
+  }
+  var request = oneOf(window, [ "requestAnimationFrame", "mozRequestAnimationFrame", "webkitRequestAnimationFrame", "setTimeout" ]);
+  var pendingDirtyRenderers = [];
+  var renderTimer;
+  function renderAllPending() {
+    for (var i = 0; i < pendingDirtyRenderers.length; i++) {
+      var renderer = pendingDirtyRenderers[i];
+      var parentRenderer = renderer.parentRenderer;
+      if (parentRenderer && parentRenderer.dirty) continue;
+      renderer.render();
+    }
+    pendingDirtyRenderers = [];
+  }
+  function handleRequestAnimationFrame() {
+    renderTimer = null;
+    renderAllPending();
+  }
+  function getRendererForHost(host) {
+    var renderer = rendererForHostTable.get(host);
+    if (!renderer) {
+      renderer = new ShadowRenderer(host);
+      rendererForHostTable.set(host, renderer);
+    }
+    return renderer;
+  }
+  function getShadowRootAncestor(node) {
+    var root = getTreeScope(node).root;
+    if (root instanceof ShadowRoot) return root;
+    return null;
+  }
+  function getRendererForShadowRoot(shadowRoot) {
+    return getRendererForHost(shadowRoot.host);
+  }
+  var spliceDiff = new ArraySplice();
+  spliceDiff.equals = function(renderNode, rawNode) {
+    return unwrap(renderNode.node) === rawNode;
+  };
+  function RenderNode(node) {
+    this.skip = false;
+    this.node = node;
+    this.childNodes = [];
+  }
+  RenderNode.prototype = {
+    append: function(node) {
+      var rv = new RenderNode(node);
+      this.childNodes.push(rv);
+      return rv;
+    },
+    sync: function(opt_added) {
+      if (this.skip) return;
+      var nodeWrapper = this.node;
+      var newChildren = this.childNodes;
+      var oldChildren = getChildNodesSnapshot(unwrap(nodeWrapper));
+      var added = opt_added || new WeakMap();
+      var splices = spliceDiff.calculateSplices(newChildren, oldChildren);
+      var newIndex = 0, oldIndex = 0;
+      var lastIndex = 0;
+      for (var i = 0; i < splices.length; i++) {
+        var splice = splices[i];
+        for (;lastIndex < splice.index; lastIndex++) {
+          oldIndex++;
+          newChildren[newIndex++].sync(added);
+        }
+        var removedCount = splice.removed.length;
+        for (var j = 0; j < removedCount; j++) {
+          var wrapper = wrap(oldChildren[oldIndex++]);
+          if (!added.get(wrapper)) remove(wrapper);
+        }
+        var addedCount = splice.addedCount;
+        var refNode = oldChildren[oldIndex] && wrap(oldChildren[oldIndex]);
+        for (var j = 0; j < addedCount; j++) {
+          var newChildRenderNode = newChildren[newIndex++];
+          var newChildWrapper = newChildRenderNode.node;
+          insertBefore(nodeWrapper, newChildWrapper, refNode);
+          added.set(newChildWrapper, true);
+          newChildRenderNode.sync(added);
+        }
+        lastIndex += addedCount;
+      }
+      for (var i = lastIndex; i < newChildren.length; i++) {
+        newChildren[i].sync(added);
+      }
+    }
+  };
+  function ShadowRenderer(host) {
+    this.host = host;
+    this.dirty = false;
+    this.invalidateAttributes();
+    this.associateNode(host);
+  }
+  ShadowRenderer.prototype = {
+    render: function(opt_renderNode) {
+      if (!this.dirty) return;
+      this.invalidateAttributes();
+      var host = this.host;
+      this.distribution(host);
+      var renderNode = opt_renderNode || new RenderNode(host);
+      this.buildRenderTree(renderNode, host);
+      var topMostRenderer = !opt_renderNode;
+      if (topMostRenderer) renderNode.sync();
+      this.dirty = false;
+    },
+    get parentRenderer() {
+      return getTreeScope(this.host).renderer;
+    },
+    invalidate: function() {
+      if (!this.dirty) {
+        this.dirty = true;
+        var parentRenderer = this.parentRenderer;
+        if (parentRenderer) parentRenderer.invalidate();
+        pendingDirtyRenderers.push(this);
+        if (renderTimer) return;
+        renderTimer = window[request](handleRequestAnimationFrame, 0);
+      }
+    },
+    distribution: function(root) {
+      this.resetAllSubtrees(root);
+      this.distributionResolution(root);
+    },
+    resetAll: function(node) {
+      if (isInsertionPoint(node)) resetDistributedNodes(node); else resetDestinationInsertionPoints(node);
+      this.resetAllSubtrees(node);
+    },
+    resetAllSubtrees: function(node) {
+      for (var child = node.firstChild; child; child = child.nextSibling) {
+        this.resetAll(child);
+      }
+      if (node.shadowRoot) this.resetAll(node.shadowRoot);
+      if (node.olderShadowRoot) this.resetAll(node.olderShadowRoot);
+    },
+    distributionResolution: function(node) {
+      if (isShadowHost(node)) {
+        var shadowHost = node;
+        var pool = poolPopulation(shadowHost);
+        var shadowTrees = getShadowTrees(shadowHost);
+        for (var i = 0; i < shadowTrees.length; i++) {
+          this.poolDistribution(shadowTrees[i], pool);
+        }
+        for (var i = shadowTrees.length - 1; i >= 0; i--) {
+          var shadowTree = shadowTrees[i];
+          var shadow = getShadowInsertionPoint(shadowTree);
+          if (shadow) {
+            var olderShadowRoot = shadowTree.olderShadowRoot;
+            if (olderShadowRoot) {
+              pool = poolPopulation(olderShadowRoot);
+            }
+            for (var j = 0; j < pool.length; j++) {
+              destributeNodeInto(pool[j], shadow);
+            }
+          }
+          this.distributionResolution(shadowTree);
+        }
+      }
+      for (var child = node.firstChild; child; child = child.nextSibling) {
+        this.distributionResolution(child);
+      }
+    },
+    poolDistribution: function(node, pool) {
+      if (node instanceof HTMLShadowElement) return;
+      if (node instanceof HTMLContentElement) {
+        var content = node;
+        this.updateDependentAttributes(content.getAttribute("select"));
+        var anyDistributed = false;
+        for (var i = 0; i < pool.length; i++) {
+          var node = pool[i];
+          if (!node) continue;
+          if (matches(node, content)) {
+            destributeNodeInto(node, content);
+            pool[i] = undefined;
+            anyDistributed = true;
+          }
+        }
+        if (!anyDistributed) {
+          for (var child = content.firstChild; child; child = child.nextSibling) {
+            destributeNodeInto(child, content);
+          }
+        }
+        return;
+      }
+      for (var child = node.firstChild; child; child = child.nextSibling) {
+        this.poolDistribution(child, pool);
+      }
+    },
+    buildRenderTree: function(renderNode, node) {
+      var children = this.compose(node);
+      for (var i = 0; i < children.length; i++) {
+        var child = children[i];
+        var childRenderNode = renderNode.append(child);
+        this.buildRenderTree(childRenderNode, child);
+      }
+      if (isShadowHost(node)) {
+        var renderer = getRendererForHost(node);
+        renderer.dirty = false;
+      }
+    },
+    compose: function(node) {
+      var children = [];
+      var p = node.shadowRoot || node;
+      for (var child = p.firstChild; child; child = child.nextSibling) {
+        if (isInsertionPoint(child)) {
+          this.associateNode(p);
+          var distributedNodes = getDistributedNodes(child);
+          for (var j = 0; j < distributedNodes.length; j++) {
+            var distributedNode = distributedNodes[j];
+            if (isFinalDestination(child, distributedNode)) children.push(distributedNode);
+          }
+        } else {
+          children.push(child);
+        }
+      }
+      return children;
+    },
+    invalidateAttributes: function() {
+      this.attributes = Object.create(null);
+    },
+    updateDependentAttributes: function(selector) {
+      if (!selector) return;
+      var attributes = this.attributes;
+      if (/\.\w+/.test(selector)) attributes["class"] = true;
+      if (/#\w+/.test(selector)) attributes["id"] = true;
+      selector.replace(/\[\s*([^\s=\|~\]]+)/g, function(_, name) {
+        attributes[name] = true;
+      });
+    },
+    dependsOnAttribute: function(name) {
+      return this.attributes[name];
+    },
+    associateNode: function(node) {
+      unsafeUnwrap(node).polymerShadowRenderer_ = this;
+    }
+  };
+  function poolPopulation(node) {
+    var pool = [];
+    for (var child = node.firstChild; child; child = child.nextSibling) {
+      if (isInsertionPoint(child)) {
+        pool.push.apply(pool, getDistributedNodes(child));
+      } else {
+        pool.push(child);
+      }
+    }
+    return pool;
+  }
+  function getShadowInsertionPoint(node) {
+    if (node instanceof HTMLShadowElement) return node;
+    if (node instanceof HTMLContentElement) return null;
+    for (var child = node.firstChild; child; child = child.nextSibling) {
+      var res = getShadowInsertionPoint(child);
+      if (res) return res;
+    }
+    return null;
+  }
+  function destributeNodeInto(child, insertionPoint) {
+    getDistributedNodes(insertionPoint).push(child);
+    var points = destinationInsertionPointsTable.get(child);
+    if (!points) destinationInsertionPointsTable.set(child, [ insertionPoint ]); else points.push(insertionPoint);
+  }
+  function getDestinationInsertionPoints(node) {
+    return destinationInsertionPointsTable.get(node);
+  }
+  function resetDestinationInsertionPoints(node) {
+    destinationInsertionPointsTable.set(node, undefined);
+  }
+  var selectorStartCharRe = /^(:not\()?[*.#[a-zA-Z_|]/;
+  function matches(node, contentElement) {
+    var select = contentElement.getAttribute("select");
+    if (!select) return true;
+    select = select.trim();
+    if (!select) return true;
+    if (!(node instanceof Element)) return false;
+    if (!selectorStartCharRe.test(select)) return false;
+    try {
+      return node.matches(select);
+    } catch (ex) {
+      return false;
+    }
+  }
+  function isFinalDestination(insertionPoint, node) {
+    var points = getDestinationInsertionPoints(node);
+    return points && points[points.length - 1] === insertionPoint;
+  }
+  function isInsertionPoint(node) {
+    return node instanceof HTMLContentElement || node instanceof HTMLShadowElement;
+  }
+  function isShadowHost(shadowHost) {
+    return shadowHost.shadowRoot;
+  }
+  function getShadowTrees(host) {
+    var trees = [];
+    for (var tree = host.shadowRoot; tree; tree = tree.olderShadowRoot) {
+      trees.push(tree);
+    }
+    return trees;
+  }
+  function render(host) {
+    new ShadowRenderer(host).render();
+  }
+  Node.prototype.invalidateShadowRenderer = function(force) {
+    var renderer = unsafeUnwrap(this).polymerShadowRenderer_;
+    if (renderer) {
+      renderer.invalidate();
+      return true;
+    }
+    return false;
+  };
+  HTMLContentElement.prototype.getDistributedNodes = HTMLShadowElement.prototype.getDistributedNodes = function() {
+    renderAllPending();
+    return getDistributedNodes(this);
+  };
+  Element.prototype.getDestinationInsertionPoints = function() {
+    renderAllPending();
+    return getDestinationInsertionPoints(this) || [];
+  };
+  HTMLContentElement.prototype.nodeIsInserted_ = HTMLShadowElement.prototype.nodeIsInserted_ = function() {
+    this.invalidateShadowRenderer();
+    var shadowRoot = getShadowRootAncestor(this);
+    var renderer;
+    if (shadowRoot) renderer = getRendererForShadowRoot(shadowRoot);
+    unsafeUnwrap(this).polymerShadowRenderer_ = renderer;
+    if (renderer) renderer.invalidate();
+  };
+  scope.getRendererForHost = getRendererForHost;
+  scope.getShadowTrees = getShadowTrees;
+  scope.renderAllPending = renderAllPending;
+  scope.getDestinationInsertionPoints = getDestinationInsertionPoints;
+  scope.visual = {
+    insertBefore: insertBefore,
+    remove: remove
+  };
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var HTMLElement = scope.wrappers.HTMLElement;
+  var assert = scope.assert;
+  var mixin = scope.mixin;
+  var registerWrapper = scope.registerWrapper;
+  var unwrap = scope.unwrap;
+  var wrap = scope.wrap;
+  var elementsWithFormProperty = [ "HTMLButtonElement", "HTMLFieldSetElement", "HTMLInputElement", "HTMLKeygenElement", "HTMLLabelElement", "HTMLLegendElement", "HTMLObjectElement", "HTMLOutputElement", "HTMLTextAreaElement" ];
+  function createWrapperConstructor(name) {
+    if (!window[name]) return;
+    assert(!scope.wrappers[name]);
+    var GeneratedWrapper = function(node) {
+      HTMLElement.call(this, node);
+    };
+    GeneratedWrapper.prototype = Object.create(HTMLElement.prototype);
+    mixin(GeneratedWrapper.prototype, {
+      get form() {
+        return wrap(unwrap(this).form);
+      }
+    });
+    registerWrapper(window[name], GeneratedWrapper, document.createElement(name.slice(4, -7)));
+    scope.wrappers[name] = GeneratedWrapper;
+  }
+  elementsWithFormProperty.forEach(createWrapperConstructor);
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var registerWrapper = scope.registerWrapper;
+  var setWrapper = scope.setWrapper;
+  var unsafeUnwrap = scope.unsafeUnwrap;
+  var unwrap = scope.unwrap;
+  var unwrapIfNeeded = scope.unwrapIfNeeded;
+  var wrap = scope.wrap;
+  var OriginalSelection = window.Selection;
+  function Selection(impl) {
+    setWrapper(impl, this);
+  }
+  Selection.prototype = {
+    get anchorNode() {
+      return wrap(unsafeUnwrap(this).anchorNode);
+    },
+    get focusNode() {
+      return wrap(unsafeUnwrap(this).focusNode);
+    },
+    addRange: function(range) {
+      unsafeUnwrap(this).addRange(unwrapIfNeeded(range));
+    },
+    collapse: function(node, index) {
+      unsafeUnwrap(this).collapse(unwrapIfNeeded(node), index);
+    },
+    containsNode: function(node, allowPartial) {
+      return unsafeUnwrap(this).containsNode(unwrapIfNeeded(node), allowPartial);
+    },
+    getRangeAt: function(index) {
+      return wrap(unsafeUnwrap(this).getRangeAt(index));
+    },
+    removeRange: function(range) {
+      unsafeUnwrap(this).removeRange(unwrap(range));
+    },
+    selectAllChildren: function(node) {
+      unsafeUnwrap(this).selectAllChildren(node instanceof ShadowRoot ? unsafeUnwrap(node.host) : unwrapIfNeeded(node));
+    },
+    toString: function() {
+      return unsafeUnwrap(this).toString();
+    }
+  };
+  if (OriginalSelection.prototype.extend) {
+    Selection.prototype.extend = function(node, offset) {
+      unsafeUnwrap(this).extend(unwrapIfNeeded(node), offset);
+    };
+  }
+  registerWrapper(window.Selection, Selection, window.getSelection());
+  scope.wrappers.Selection = Selection;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var registerWrapper = scope.registerWrapper;
+  var setWrapper = scope.setWrapper;
+  var unsafeUnwrap = scope.unsafeUnwrap;
+  var unwrapIfNeeded = scope.unwrapIfNeeded;
+  var wrap = scope.wrap;
+  var OriginalTreeWalker = window.TreeWalker;
+  function TreeWalker(impl) {
+    setWrapper(impl, this);
+  }
+  TreeWalker.prototype = {
+    get root() {
+      return wrap(unsafeUnwrap(this).root);
+    },
+    get currentNode() {
+      return wrap(unsafeUnwrap(this).currentNode);
+    },
+    set currentNode(node) {
+      unsafeUnwrap(this).currentNode = unwrapIfNeeded(node);
+    },
+    get filter() {
+      return unsafeUnwrap(this).filter;
+    },
+    parentNode: function() {
+      return wrap(unsafeUnwrap(this).parentNode());
+    },
+    firstChild: function() {
+      return wrap(unsafeUnwrap(this).firstChild());
+    },
+    lastChild: function() {
+      return wrap(unsafeUnwrap(this).lastChild());
+    },
+    previousSibling: function() {
+      return wrap(unsafeUnwrap(this).previousSibling());
+    },
+    previousNode: function() {
+      return wrap(unsafeUnwrap(this).previousNode());
+    },
+    nextNode: function() {
+      return wrap(unsafeUnwrap(this).nextNode());
+    }
+  };
+  registerWrapper(OriginalTreeWalker, TreeWalker);
+  scope.wrappers.TreeWalker = TreeWalker;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var GetElementsByInterface = scope.GetElementsByInterface;
+  var Node = scope.wrappers.Node;
+  var ParentNodeInterface = scope.ParentNodeInterface;
+  var NonElementParentNodeInterface = scope.NonElementParentNodeInterface;
+  var Selection = scope.wrappers.Selection;
+  var SelectorsInterface = scope.SelectorsInterface;
+  var ShadowRoot = scope.wrappers.ShadowRoot;
+  var TreeScope = scope.TreeScope;
+  var cloneNode = scope.cloneNode;
+  var defineGetter = scope.defineGetter;
+  var defineWrapGetter = scope.defineWrapGetter;
+  var elementFromPoint = scope.elementFromPoint;
+  var forwardMethodsToWrapper = scope.forwardMethodsToWrapper;
+  var matchesNames = scope.matchesNames;
+  var mixin = scope.mixin;
+  var registerWrapper = scope.registerWrapper;
+  var renderAllPending = scope.renderAllPending;
+  var rewrap = scope.rewrap;
+  var setWrapper = scope.setWrapper;
+  var unsafeUnwrap = scope.unsafeUnwrap;
+  var unwrap = scope.unwrap;
+  var wrap = scope.wrap;
+  var wrapEventTargetMethods = scope.wrapEventTargetMethods;
+  var wrapNodeList = scope.wrapNodeList;
+  var implementationTable = new WeakMap();
+  function Document(node) {
+    Node.call(this, node);
+    this.treeScope_ = new TreeScope(this, null);
+  }
+  Document.prototype = Object.create(Node.prototype);
+  defineWrapGetter(Document, "documentElement");
+  defineWrapGetter(Document, "body");
+  defineWrapGetter(Document, "head");
+  defineGetter(Document, "activeElement", function() {
+    var unwrappedActiveElement = unwrap(this).activeElement;
+    if (!unwrappedActiveElement || !unwrappedActiveElement.nodeType) return null;
+    var activeElement = wrap(unwrappedActiveElement);
+    while (!this.contains(activeElement)) {
+      while (activeElement.parentNode) {
+        activeElement = activeElement.parentNode;
+      }
+      if (activeElement.host) {
+        activeElement = activeElement.host;
+      } else {
+        return null;
+      }
+    }
+    return activeElement;
+  });
+  function wrapMethod(name) {
+    var original = document[name];
+    Document.prototype[name] = function() {
+      return wrap(original.apply(unsafeUnwrap(this), arguments));
+    };
+  }
+  [ "createComment", "createDocumentFragment", "createElement", "createElementNS", "createEvent", "createEventNS", "createRange", "createTextNode" ].forEach(wrapMethod);
+  var originalAdoptNode = document.adoptNode;
+  function adoptNodeNoRemove(node, doc) {
+    originalAdoptNode.call(unsafeUnwrap(doc), unwrap(node));
+    adoptSubtree(node, doc);
+  }
+  function adoptSubtree(node, doc) {
+    if (node.shadowRoot) doc.adoptNode(node.shadowRoot);
+    if (node instanceof ShadowRoot) adoptOlderShadowRoots(node, doc);
+    for (var child = node.firstChild; child; child = child.nextSibling) {
+      adoptSubtree(child, doc);
+    }
+  }
+  function adoptOlderShadowRoots(shadowRoot, doc) {
+    var oldShadowRoot = shadowRoot.olderShadowRoot;
+    if (oldShadowRoot) doc.adoptNode(oldShadowRoot);
+  }
+  var originalGetSelection = document.getSelection;
+  mixin(Document.prototype, {
+    adoptNode: function(node) {
+      if (node.parentNode) node.parentNode.removeChild(node);
+      adoptNodeNoRemove(node, this);
+      return node;
+    },
+    elementFromPoint: function(x, y) {
+      return elementFromPoint(this, this, x, y);
+    },
+    importNode: function(node, deep) {
+      return cloneNode(node, deep, unsafeUnwrap(this));
+    },
+    getSelection: function() {
+      renderAllPending();
+      return new Selection(originalGetSelection.call(unwrap(this)));
+    },
+    getElementsByName: function(name) {
+      return SelectorsInterface.querySelectorAll.call(this, "[name=" + JSON.stringify(String(name)) + "]");
+    }
+  });
+  var originalCreateTreeWalker = document.createTreeWalker;
+  var TreeWalkerWrapper = scope.wrappers.TreeWalker;
+  Document.prototype.createTreeWalker = function(root, whatToShow, filter, expandEntityReferences) {
+    var newFilter = null;
+    if (filter) {
+      if (filter.acceptNode && typeof filter.acceptNode === "function") {
+        newFilter = {
+          acceptNode: function(node) {
+            return filter.acceptNode(wrap(node));
+          }
+        };
+      } else if (typeof filter === "function") {
+        newFilter = function(node) {
+          return filter(wrap(node));
+        };
+      }
+    }
+    return new TreeWalkerWrapper(originalCreateTreeWalker.call(unwrap(this), unwrap(root), whatToShow, newFilter, expandEntityReferences));
+  };
+  if (document.registerElement) {
+    var originalRegisterElement = document.registerElement;
+    Document.prototype.registerElement = function(tagName, object) {
+      var prototype, extendsOption;
+      if (object !== undefined) {
+        prototype = object.prototype;
+        extendsOption = object.extends;
+      }
+      if (!prototype) prototype = Object.create(HTMLElement.prototype);
+      if (scope.nativePrototypeTable.get(prototype)) {
+        throw new Error("NotSupportedError");
+      }
+      var proto = Object.getPrototypeOf(prototype);
+      var nativePrototype;
+      var prototypes = [];
+      while (proto) {
+        nativePrototype = scope.nativePrototypeTable.get(proto);
+        if (nativePrototype) break;
+        prototypes.push(proto);
+        proto = Object.getPrototypeOf(proto);
+      }
+      if (!nativePrototype) {
+        throw new Error("NotSupportedError");
+      }
+      var newPrototype = Object.create(nativePrototype);
+      for (var i = prototypes.length - 1; i >= 0; i--) {
+        newPrototype = Object.create(newPrototype);
+      }
+      [ "createdCallback", "attachedCallback", "detachedCallback", "attributeChangedCallback" ].forEach(function(name) {
+        var f = prototype[name];
+        if (!f) return;
+        newPrototype[name] = function() {
+          if (!(wrap(this) instanceof CustomElementConstructor)) {
+            rewrap(this);
+          }
+          f.apply(wrap(this), arguments);
+        };
+      });
+      var p = {
+        prototype: newPrototype
+      };
+      if (extendsOption) p.extends = extendsOption;
+      function CustomElementConstructor(node) {
+        if (!node) {
+          if (extendsOption) {
+            return document.createElement(extendsOption, tagName);
+          } else {
+            return document.createElement(tagName);
+          }
+        }
+        setWrapper(node, this);
+      }
+      CustomElementConstructor.prototype = prototype;
+      CustomElementConstructor.prototype.constructor = CustomElementConstructor;
+      scope.constructorTable.set(newPrototype, CustomElementConstructor);
+      scope.nativePrototypeTable.set(prototype, newPrototype);
+      var nativeConstructor = originalRegisterElement.call(unwrap(this), tagName, p);
+      return CustomElementConstructor;
+    };
+    forwardMethodsToWrapper([ window.HTMLDocument || window.Document ], [ "registerElement" ]);
+  }
+  forwardMethodsToWrapper([ window.HTMLBodyElement, window.HTMLDocument || window.Document, window.HTMLHeadElement, window.HTMLHtmlElement ], [ "appendChild", "compareDocumentPosition", "contains", "getElementsByClassName", "getElementsByTagName", "getElementsByTagNameNS", "insertBefore", "querySelector", "querySelectorAll", "removeChild", "replaceChild" ]);
+  forwardMethodsToWrapper([ window.HTMLBodyElement, window.HTMLHeadElement, window.HTMLHtmlElement ], matchesNames);
+  forwardMethodsToWrapper([ window.HTMLDocument || window.Document ], [ "adoptNode", "importNode", "contains", "createComment", "createDocumentFragment", "createElement", "createElementNS", "createEvent", "createEventNS", "createRange", "createTextNode", "createTreeWalker", "elementFromPoint", "getElementById", "getElementsByName", "getSelection" ]);
+  mixin(Document.prototype, GetElementsByInterface);
+  mixin(Document.prototype, ParentNodeInterface);
+  mixin(Document.prototype, SelectorsInterface);
+  mixin(Document.prototype, NonElementParentNodeInterface);
+  mixin(Document.prototype, {
+    get implementation() {
+      var implementation = implementationTable.get(this);
+      if (implementation) return implementation;
+      implementation = new DOMImplementation(unwrap(this).implementation);
+      implementationTable.set(this, implementation);
+      return implementation;
+    },
+    get defaultView() {
+      return wrap(unwrap(this).defaultView);
+    }
+  });
+  registerWrapper(window.Document, Document, document.implementation.createHTMLDocument(""));
+  if (window.HTMLDocument) registerWrapper(window.HTMLDocument, Document);
+  wrapEventTargetMethods([ window.HTMLBodyElement, window.HTMLDocument || window.Document, window.HTMLHeadElement ]);
+  function DOMImplementation(impl) {
+    setWrapper(impl, this);
+  }
+  var originalCreateDocument = document.implementation.createDocument;
+  DOMImplementation.prototype.createDocument = function() {
+    arguments[2] = unwrap(arguments[2]);
+    return wrap(originalCreateDocument.apply(unsafeUnwrap(this), arguments));
+  };
+  function wrapImplMethod(constructor, name) {
+    var original = document.implementation[name];
+    constructor.prototype[name] = function() {
+      return wrap(original.apply(unsafeUnwrap(this), arguments));
+    };
+  }
+  function forwardImplMethod(constructor, name) {
+    var original = document.implementation[name];
+    constructor.prototype[name] = function() {
+      return original.apply(unsafeUnwrap(this), arguments);
+    };
+  }
+  wrapImplMethod(DOMImplementation, "createDocumentType");
+  wrapImplMethod(DOMImplementation, "createHTMLDocument");
+  forwardImplMethod(DOMImplementation, "hasFeature");
+  registerWrapper(window.DOMImplementation, DOMImplementation);
+  forwardMethodsToWrapper([ window.DOMImplementation ], [ "createDocument", "createDocumentType", "createHTMLDocument", "hasFeature" ]);
+  scope.adoptNodeNoRemove = adoptNodeNoRemove;
+  scope.wrappers.DOMImplementation = DOMImplementation;
+  scope.wrappers.Document = Document;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var EventTarget = scope.wrappers.EventTarget;
+  var Selection = scope.wrappers.Selection;
+  var mixin = scope.mixin;
+  var registerWrapper = scope.registerWrapper;
+  var renderAllPending = scope.renderAllPending;
+  var unwrap = scope.unwrap;
+  var unwrapIfNeeded = scope.unwrapIfNeeded;
+  var wrap = scope.wrap;
+  var OriginalWindow = window.Window;
+  var originalGetComputedStyle = window.getComputedStyle;
+  var originalGetDefaultComputedStyle = window.getDefaultComputedStyle;
+  var originalGetSelection = window.getSelection;
+  function Window(impl) {
+    EventTarget.call(this, impl);
+  }
+  Window.prototype = Object.create(EventTarget.prototype);
+  OriginalWindow.prototype.getComputedStyle = function(el, pseudo) {
+    return wrap(this || window).getComputedStyle(unwrapIfNeeded(el), pseudo);
+  };
+  if (originalGetDefaultComputedStyle) {
+    OriginalWindow.prototype.getDefaultComputedStyle = function(el, pseudo) {
+      return wrap(this || window).getDefaultComputedStyle(unwrapIfNeeded(el), pseudo);
+    };
+  }
+  OriginalWindow.prototype.getSelection = function() {
+    return wrap(this || window).getSelection();
+  };
+  delete window.getComputedStyle;
+  delete window.getDefaultComputedStyle;
+  delete window.getSelection;
+  [ "addEventListener", "removeEventListener", "dispatchEvent" ].forEach(function(name) {
+    OriginalWindow.prototype[name] = function() {
+      var w = wrap(this || window);
+      return w[name].apply(w, arguments);
+    };
+    delete window[name];
+  });
+  mixin(Window.prototype, {
+    getComputedStyle: function(el, pseudo) {
+      renderAllPending();
+      return originalGetComputedStyle.call(unwrap(this), unwrapIfNeeded(el), pseudo);
+    },
+    getSelection: function() {
+      renderAllPending();
+      return new Selection(originalGetSelection.call(unwrap(this)));
+    },
+    get document() {
+      return wrap(unwrap(this).document);
+    }
+  });
+  if (originalGetDefaultComputedStyle) {
+    Window.prototype.getDefaultComputedStyle = function(el, pseudo) {
+      renderAllPending();
+      return originalGetDefaultComputedStyle.call(unwrap(this), unwrapIfNeeded(el), pseudo);
+    };
+  }
+  registerWrapper(OriginalWindow, Window, window);
+  scope.wrappers.Window = Window;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var unwrap = scope.unwrap;
+  var OriginalDataTransfer = window.DataTransfer || window.Clipboard;
+  var OriginalDataTransferSetDragImage = OriginalDataTransfer.prototype.setDragImage;
+  if (OriginalDataTransferSetDragImage) {
+    OriginalDataTransfer.prototype.setDragImage = function(image, x, y) {
+      OriginalDataTransferSetDragImage.call(this, unwrap(image), x, y);
+    };
+  }
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var registerWrapper = scope.registerWrapper;
+  var setWrapper = scope.setWrapper;
+  var unwrap = scope.unwrap;
+  var OriginalFormData = window.FormData;
+  if (!OriginalFormData) return;
+  function FormData(formElement) {
+    var impl;
+    if (formElement instanceof OriginalFormData) {
+      impl = formElement;
+    } else {
+      impl = new OriginalFormData(formElement && unwrap(formElement));
+    }
+    setWrapper(impl, this);
+  }
+  registerWrapper(OriginalFormData, FormData, new OriginalFormData());
+  scope.wrappers.FormData = FormData;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var unwrapIfNeeded = scope.unwrapIfNeeded;
+  var originalSend = XMLHttpRequest.prototype.send;
+  XMLHttpRequest.prototype.send = function(obj) {
+    return originalSend.call(this, unwrapIfNeeded(obj));
+  };
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var isWrapperFor = scope.isWrapperFor;
+  var elements = {
+    a: "HTMLAnchorElement",
+    area: "HTMLAreaElement",
+    audio: "HTMLAudioElement",
+    base: "HTMLBaseElement",
+    body: "HTMLBodyElement",
+    br: "HTMLBRElement",
+    button: "HTMLButtonElement",
+    canvas: "HTMLCanvasElement",
+    caption: "HTMLTableCaptionElement",
+    col: "HTMLTableColElement",
+    content: "HTMLContentElement",
+    data: "HTMLDataElement",
+    datalist: "HTMLDataListElement",
+    del: "HTMLModElement",
+    dir: "HTMLDirectoryElement",
+    div: "HTMLDivElement",
+    dl: "HTMLDListElement",
+    embed: "HTMLEmbedElement",
+    fieldset: "HTMLFieldSetElement",
+    font: "HTMLFontElement",
+    form: "HTMLFormElement",
+    frame: "HTMLFrameElement",
+    frameset: "HTMLFrameSetElement",
+    h1: "HTMLHeadingElement",
+    head: "HTMLHeadElement",
+    hr: "HTMLHRElement",
+    html: "HTMLHtmlElement",
+    iframe: "HTMLIFrameElement",
+    img: "HTMLImageElement",
+    input: "HTMLInputElement",
+    keygen: "HTMLKeygenElement",
+    label: "HTMLLabelElement",
+    legend: "HTMLLegendElement",
+    li: "HTMLLIElement",
+    link: "HTMLLinkElement",
+    map: "HTMLMapElement",
+    marquee: "HTMLMarqueeElement",
+    menu: "HTMLMenuElement",
+    menuitem: "HTMLMenuItemElement",
+    meta: "HTMLMetaElement",
+    meter: "HTMLMeterElement",
+    object: "HTMLObjectElement",
+    ol: "HTMLOListElement",
+    optgroup: "HTMLOptGroupElement",
+    option: "HTMLOptionElement",
+    output: "HTMLOutputElement",
+    p: "HTMLParagraphElement",
+    param: "HTMLParamElement",
+    pre: "HTMLPreElement",
+    progress: "HTMLProgressElement",
+    q: "HTMLQuoteElement",
+    script: "HTMLScriptElement",
+    select: "HTMLSelectElement",
+    shadow: "HTMLShadowElement",
+    source: "HTMLSourceElement",
+    span: "HTMLSpanElement",
+    style: "HTMLStyleElement",
+    table: "HTMLTableElement",
+    tbody: "HTMLTableSectionElement",
+    template: "HTMLTemplateElement",
+    textarea: "HTMLTextAreaElement",
+    thead: "HTMLTableSectionElement",
+    time: "HTMLTimeElement",
+    title: "HTMLTitleElement",
+    tr: "HTMLTableRowElement",
+    track: "HTMLTrackElement",
+    ul: "HTMLUListElement",
+    video: "HTMLVideoElement"
+  };
+  function overrideConstructor(tagName) {
+    var nativeConstructorName = elements[tagName];
+    var nativeConstructor = window[nativeConstructorName];
+    if (!nativeConstructor) return;
+    var element = document.createElement(tagName);
+    var wrapperConstructor = element.constructor;
+    window[nativeConstructorName] = wrapperConstructor;
+  }
+  Object.keys(elements).forEach(overrideConstructor);
+  Object.getOwnPropertyNames(scope.wrappers).forEach(function(name) {
+    window[name] = scope.wrappers[name];
+  });
+})(window.ShadowDOMPolyfill);