Removed Polymer from Observatory deps

packages/web_components/lib/CustomElements.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;
+  })();
+}
+
+(function(global) {
+  if (global.JsMutationObserver) {
+    return;
+  }
+  var registrationsTable = new WeakMap();
+  var setImmediate;
+  if (/Trident|Edge/.test(navigator.userAgent)) {
+    setImmediate = setTimeout;
+  } else if (window.setImmediate) {
+    setImmediate = window.setImmediate;
+  } else {
+    var setImmediateQueue = [];
+    var sentinel = String(Math.random());
+    window.addEventListener("message", function(e) {
+      if (e.data === sentinel) {
+        var queue = setImmediateQueue;
+        setImmediateQueue = [];
+        queue.forEach(function(func) {
+          func();
+        });
+      }
+    });
+    setImmediate = function(func) {
+      setImmediateQueue.push(func);
+      window.postMessage(sentinel, "*");
+    };
+  }
+  var isScheduled = false;
+  var scheduledObservers = [];
+  function scheduleCallback(observer) {
+    scheduledObservers.push(observer);
+    if (!isScheduled) {
+      isScheduled = true;
+      setImmediate(dispatchCallbacks);
+    }
+  }
+  function wrapIfNeeded(node) {
+    return window.ShadowDOMPolyfill && window.ShadowDOMPolyfill.wrapIfNeeded(node) || node;
+  }
+  function dispatchCallbacks() {
+    isScheduled = false;
+    var observers = scheduledObservers;
+    scheduledObservers = [];
+    observers.sort(function(o1, o2) {
+      return o1.uid_ - o2.uid_;
+    });
+    var anyNonEmpty = false;
+    observers.forEach(function(observer) {
+      var queue = observer.takeRecords();
+      removeTransientObserversFor(observer);
+      if (queue.length) {
+        observer.callback_(queue, observer);
+        anyNonEmpty = true;
+      }
+    });
+    if (anyNonEmpty) dispatchCallbacks();
+  }
+  function removeTransientObserversFor(observer) {
+    observer.nodes_.forEach(function(node) {
+      var registrations = registrationsTable.get(node);
+      if (!registrations) return;
+      registrations.forEach(function(registration) {
+        if (registration.observer === observer) registration.removeTransientObservers();
+      });
+    });
+  }
+  function forEachAncestorAndObserverEnqueueRecord(target, callback) {
+    for (var node = target; node; node = node.parentNode) {
+      var registrations = registrationsTable.get(node);
+      if (registrations) {
+        for (var j = 0; j < registrations.length; j++) {
+          var registration = registrations[j];
+          var options = registration.options;
+          if (node !== target && !options.subtree) continue;
+          var record = callback(options);
+          if (record) registration.enqueue(record);
+        }
+      }
+    }
+  }
+  var uidCounter = 0;
+  function JsMutationObserver(callback) {
+    this.callback_ = callback;
+    this.nodes_ = [];
+    this.records_ = [];
+    this.uid_ = ++uidCounter;
+  }
+  JsMutationObserver.prototype = {
+    observe: function(target, options) {
+      target = wrapIfNeeded(target);
+      if (!options.childList && !options.attributes && !options.characterData || options.attributeOldValue && !options.attributes || options.attributeFilter && options.attributeFilter.length && !options.attributes || options.characterDataOldValue && !options.characterData) {
+        throw new SyntaxError();
+      }
+      var registrations = registrationsTable.get(target);
+      if (!registrations) registrationsTable.set(target, registrations = []);
+      var registration;
+      for (var i = 0; i < registrations.length; i++) {
+        if (registrations[i].observer === this) {
+          registration = registrations[i];
+          registration.removeListeners();
+          registration.options = options;
+          break;
+        }
+      }
+      if (!registration) {
+        registration = new Registration(this, target, options);
+        registrations.push(registration);
+        this.nodes_.push(target);
+      }
+      registration.addListeners();
+    },
+    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) {
+            registration.removeListeners();
+            registrations.splice(i, 1);
+            break;
+          }
+        }
+      }, this);
+      this.records_ = [];
+    },
+    takeRecords: function() {
+      var copyOfRecords = this.records_;
+      this.records_ = [];
+      return copyOfRecords;
+    }
+  };
+  function MutationRecord(type, target) {
+    this.type = type;
+    this.target = target;
+    this.addedNodes = [];
+    this.removedNodes = [];
+    this.previousSibling = null;
+    this.nextSibling = null;
+    this.attributeName = null;
+    this.attributeNamespace = null;
+    this.oldValue = null;
+  }
+  function copyMutationRecord(original) {
+    var record = new MutationRecord(original.type, original.target);
+    record.addedNodes = original.addedNodes.slice();
+    record.removedNodes = original.removedNodes.slice();
+    record.previousSibling = original.previousSibling;
+    record.nextSibling = original.nextSibling;
+    record.attributeName = original.attributeName;
+    record.attributeNamespace = original.attributeNamespace;
+    record.oldValue = original.oldValue;
+    return record;
+  }
+  var currentRecord, recordWithOldValue;
+  function getRecord(type, target) {
+    return currentRecord = new MutationRecord(type, target);
+  }
+  function getRecordWithOldValue(oldValue) {
+    if (recordWithOldValue) return recordWithOldValue;
+    recordWithOldValue = copyMutationRecord(currentRecord);
+    recordWithOldValue.oldValue = oldValue;
+    return recordWithOldValue;
+  }
+  function clearRecords() {
+    currentRecord = recordWithOldValue = undefined;
+  }
+  function recordRepresentsCurrentMutation(record) {
+    return record === recordWithOldValue || record === currentRecord;
+  }
+  function selectRecord(lastRecord, newRecord) {
+    if (lastRecord === newRecord) return lastRecord;
+    if (recordWithOldValue && recordRepresentsCurrentMutation(lastRecord)) return recordWithOldValue;
+    return null;
+  }
+  function Registration(observer, target, options) {
+    this.observer = observer;
+    this.target = target;
+    this.options = options;
+    this.transientObservedNodes = [];
+  }
+  Registration.prototype = {
+    enqueue: function(record) {
+      var records = this.observer.records_;
+      var length = records.length;
+      if (records.length > 0) {
+        var lastRecord = records[length - 1];
+        var recordToReplaceLast = selectRecord(lastRecord, record);
+        if (recordToReplaceLast) {
+          records[length - 1] = recordToReplaceLast;
+          return;
+        }
+      } else {
+        scheduleCallback(this.observer);
+      }
+      records[length] = record;
+    },
+    addListeners: function() {
+      this.addListeners_(this.target);
+    },
+    addListeners_: function(node) {
+      var options = this.options;
+      if (options.attributes) node.addEventListener("DOMAttrModified", this, true);
+      if (options.characterData) node.addEventListener("DOMCharacterDataModified", this, true);
+      if (options.childList) node.addEventListener("DOMNodeInserted", this, true);
+      if (options.childList || options.subtree) node.addEventListener("DOMNodeRemoved", this, true);
+    },
+    removeListeners: function() {
+      this.removeListeners_(this.target);
+    },
+    removeListeners_: function(node) {
+      var options = this.options;
+      if (options.attributes) node.removeEventListener("DOMAttrModified", this, true);
+      if (options.characterData) node.removeEventListener("DOMCharacterDataModified", this, true);
+      if (options.childList) node.removeEventListener("DOMNodeInserted", this, true);
+      if (options.childList || options.subtree) node.removeEventListener("DOMNodeRemoved", this, true);
+    },
+    addTransientObserver: function(node) {
+      if (node === this.target) return;
+      this.addListeners_(node);
+      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 = [];
+      transientObservedNodes.forEach(function(node) {
+        this.removeListeners_(node);
+        var registrations = registrationsTable.get(node);
+        for (var i = 0; i < registrations.length; i++) {
+          if (registrations[i] === this) {
+            registrations.splice(i, 1);
+            break;
+          }
+        }
+      }, this);
+    },
+    handleEvent: function(e) {
+      e.stopImmediatePropagation();
+      switch (e.type) {
+       case "DOMAttrModified":
+        var name = e.attrName;
+        var namespace = e.relatedNode.namespaceURI;
+        var target = e.target;
+        var record = new getRecord("attributes", target);
+        record.attributeName = name;
+        record.attributeNamespace = namespace;
+        var oldValue = e.attrChange === MutationEvent.ADDITION ? null : e.prevValue;
+        forEachAncestorAndObserverEnqueueRecord(target, function(options) {
+          if (!options.attributes) return;
+          if (options.attributeFilter && options.attributeFilter.length && options.attributeFilter.indexOf(name) === -1 && options.attributeFilter.indexOf(namespace) === -1) {
+            return;
+          }
+          if (options.attributeOldValue) return getRecordWithOldValue(oldValue);
+          return record;
+        });
+        break;
+
+       case "DOMCharacterDataModified":
+        var target = e.target;
+        var record = getRecord("characterData", target);
+        var oldValue = e.prevValue;
+        forEachAncestorAndObserverEnqueueRecord(target, function(options) {
+          if (!options.characterData) return;
+          if (options.characterDataOldValue) return getRecordWithOldValue(oldValue);
+          return record;
+        });
+        break;
+
+       case "DOMNodeRemoved":
+        this.addTransientObserver(e.target);
+
+       case "DOMNodeInserted":
+        var changedNode = e.target;
+        var addedNodes, removedNodes;
+        if (e.type === "DOMNodeInserted") {
+          addedNodes = [ changedNode ];
+          removedNodes = [];
+        } else {
+          addedNodes = [];
+          removedNodes = [ changedNode ];
+        }
+        var previousSibling = changedNode.previousSibling;
+        var nextSibling = changedNode.nextSibling;
+        var record = getRecord("childList", e.target.parentNode);
+        record.addedNodes = addedNodes;
+        record.removedNodes = removedNodes;
+        record.previousSibling = previousSibling;
+        record.nextSibling = nextSibling;
+        forEachAncestorAndObserverEnqueueRecord(e.relatedNode, function(options) {
+          if (!options.childList) return;
+          return record;
+        });
+      }
+      clearRecords();
+    }
+  };
+  global.JsMutationObserver = JsMutationObserver;
+  if (!global.MutationObserver) {
+    global.MutationObserver = JsMutationObserver;
+    JsMutationObserver._isPolyfilled = true;
+  }
+})(self);
+
+(function(scope) {
+  "use strict";
+  if (!window.performance) {
+    var start = Date.now();
+    window.performance = {
+      now: function() {
+        return Date.now() - start;
+      }
+    };
+  }
+  if (!window.requestAnimationFrame) {
+    window.requestAnimationFrame = function() {
+      var nativeRaf = window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame;
+      return nativeRaf ? function(callback) {
+        return nativeRaf(function() {
+          callback(performance.now());
+        });
+      } : function(callback) {
+        return window.setTimeout(callback, 1e3 / 60);
+      };
+    }();
+  }
+  if (!window.cancelAnimationFrame) {
+    window.cancelAnimationFrame = function() {
+      return window.webkitCancelAnimationFrame || window.mozCancelAnimationFrame || function(id) {
+        clearTimeout(id);
+      };
+    }();
+  }
+  var workingDefaultPrevented = function() {
+    var e = document.createEvent("Event");
+    e.initEvent("foo", true, true);
+    e.preventDefault();
+    return e.defaultPrevented;
+  }();
+  if (!workingDefaultPrevented) {
+    var origPreventDefault = Event.prototype.preventDefault;
+    Event.prototype.preventDefault = function() {
+      if (!this.cancelable) {
+        return;
+      }
+      origPreventDefault.call(this);
+      Object.defineProperty(this, "defaultPrevented", {
+        get: function() {
+          return true;
+        },
+        configurable: true
+      });
+    };
+  }
+  var isIE = /Trident/.test(navigator.userAgent);
+  if (!window.CustomEvent || isIE && typeof window.CustomEvent !== "function") {
+    window.CustomEvent = function(inType, params) {
+      params = params || {};
+      var e = document.createEvent("CustomEvent");
+      e.initCustomEvent(inType, Boolean(params.bubbles), Boolean(params.cancelable), params.detail);
+      return e;
+    };
+    window.CustomEvent.prototype = window.Event.prototype;
+  }
+  if (!window.Event || isIE && typeof window.Event !== "function") {
+    var origEvent = window.Event;
+    window.Event = function(inType, params) {
+      params = params || {};
+      var e = document.createEvent("Event");
+      e.initEvent(inType, Boolean(params.bubbles), Boolean(params.cancelable));
+      return e;
+    };
+    window.Event.prototype = origEvent.prototype;
+  }
+})(window.WebComponents);
+
+window.CustomElements = window.CustomElements || {
+  flags: {}
+};
+
+(function(scope) {
+  var flags = scope.flags;
+  var modules = [];
+  var addModule = function(module) {
+    modules.push(module);
+  };
+  var initializeModules = function() {
+    modules.forEach(function(module) {
+      module(scope);
+    });
+  };
+  scope.addModule = addModule;
+  scope.initializeModules = initializeModules;
+  scope.hasNative = Boolean(document.registerElement);
+  scope.isIE = /Trident/.test(navigator.userAgent);
+  scope.useNative = !flags.register && scope.hasNative && !window.ShadowDOMPolyfill && (!window.HTMLImports || window.HTMLImports.useNative);
+})(window.CustomElements);
+
+window.CustomElements.addModule(function(scope) {
+  var IMPORT_LINK_TYPE = window.HTMLImports ? window.HTMLImports.IMPORT_LINK_TYPE : "none";
+  function forSubtree(node, cb) {
+    findAllElements(node, function(e) {
+      if (cb(e)) {
+        return true;
+      }
+      forRoots(e, cb);
+    });
+    forRoots(node, cb);
+  }
+  function findAllElements(node, find, data) {
+    var e = node.firstElementChild;
+    if (!e) {
+      e = node.firstChild;
+      while (e && e.nodeType !== Node.ELEMENT_NODE) {
+        e = e.nextSibling;
+      }
+    }
+    while (e) {
+      if (find(e, data) !== true) {
+        findAllElements(e, find, data);
+      }
+      e = e.nextElementSibling;
+    }
+    return null;
+  }
+  function forRoots(node, cb) {
+    var root = node.shadowRoot;
+    while (root) {
+      forSubtree(root, cb);
+      root = root.olderShadowRoot;
+    }
+  }
+  function forDocumentTree(doc, cb) {
+    _forDocumentTree(doc, cb, []);
+  }
+  function _forDocumentTree(doc, cb, processingDocuments) {
+    doc = window.wrap(doc);
+    if (processingDocuments.indexOf(doc) >= 0) {
+      return;
+    }
+    processingDocuments.push(doc);
+    var imports = doc.querySelectorAll("link[rel=" + IMPORT_LINK_TYPE + "]");
+    for (var i = 0, l = imports.length, n; i < l && (n = imports[i]); i++) {
+      if (n.import) {
+        _forDocumentTree(n.import, cb, processingDocuments);
+      }
+    }
+    cb(doc);
+  }
+  scope.forDocumentTree = forDocumentTree;
+  scope.forSubtree = forSubtree;
+});
+
+window.CustomElements.addModule(function(scope) {
+  var flags = scope.flags;
+  var forSubtree = scope.forSubtree;
+  var forDocumentTree = scope.forDocumentTree;
+  function addedNode(node, isAttached) {
+    return added(node, isAttached) || addedSubtree(node, isAttached);
+  }
+  function added(node, isAttached) {
+    if (scope.upgrade(node, isAttached)) {
+      return true;
+    }
+    if (isAttached) {
+      attached(node);
+    }
+  }
+  function addedSubtree(node, isAttached) {
+    forSubtree(node, function(e) {
+      if (added(e, isAttached)) {
+        return true;
+      }
+    });
+  }
+  var hasThrottledAttached = window.MutationObserver._isPolyfilled && flags["throttle-attached"];
+  scope.hasPolyfillMutations = hasThrottledAttached;
+  scope.hasThrottledAttached = hasThrottledAttached;
+  var isPendingMutations = false;
+  var pendingMutations = [];
+  function deferMutation(fn) {
+    pendingMutations.push(fn);
+    if (!isPendingMutations) {
+      isPendingMutations = true;
+      setTimeout(takeMutations);
+    }
+  }
+  function takeMutations() {
+    isPendingMutations = false;
+    var $p = pendingMutations;
+    for (var i = 0, l = $p.length, p; i < l && (p = $p[i]); i++) {
+      p();
+    }
+    pendingMutations = [];
+  }
+  function attached(element) {
+    if (hasThrottledAttached) {
+      deferMutation(function() {
+        _attached(element);
+      });
+    } else {
+      _attached(element);
+    }
+  }
+  function _attached(element) {
+    if (element.__upgraded__ && !element.__attached) {
+      element.__attached = true;
+      if (element.attachedCallback) {
+        element.attachedCallback();
+      }
+    }
+  }
+  function detachedNode(node) {
+    detached(node);
+    forSubtree(node, function(e) {
+      detached(e);
+    });
+  }
+  function detached(element) {
+    if (hasThrottledAttached) {
+      deferMutation(function() {
+        _detached(element);
+      });
+    } else {
+      _detached(element);
+    }
+  }
+  function _detached(element) {
+    if (element.__upgraded__ && element.__attached) {
+      element.__attached = false;
+      if (element.detachedCallback) {
+        element.detachedCallback();
+      }
+    }
+  }
+  function inDocument(element) {
+    var p = element;
+    var doc = window.wrap(document);
+    while (p) {
+      if (p == doc) {
+        return true;
+      }
+      p = p.parentNode || p.nodeType === Node.DOCUMENT_FRAGMENT_NODE && p.host;
+    }
+  }
+  function watchShadow(node) {
+    if (node.shadowRoot && !node.shadowRoot.__watched) {
+      flags.dom && console.log("watching shadow-root for: ", node.localName);
+      var root = node.shadowRoot;
+      while (root) {
+        observe(root);
+        root = root.olderShadowRoot;
+      }
+    }
+  }
+  function handler(root, mutations) {
+    if (flags.dom) {
+      var mx = mutations[0];
+      if (mx && mx.type === "childList" && mx.addedNodes) {
+        if (mx.addedNodes) {
+          var d = mx.addedNodes[0];
+          while (d && d !== document && !d.host) {
+            d = d.parentNode;
+          }
+          var u = d && (d.URL || d._URL || d.host && d.host.localName) || "";
+          u = u.split("/?").shift().split("/").pop();
+        }
+      }
+      console.group("mutations (%d) [%s]", mutations.length, u || "");
+    }
+    var isAttached = inDocument(root);
+    mutations.forEach(function(mx) {
+      if (mx.type === "childList") {
+        forEach(mx.addedNodes, function(n) {
+          if (!n.localName) {
+            return;
+          }
+          addedNode(n, isAttached);
+        });
+        forEach(mx.removedNodes, function(n) {
+          if (!n.localName) {
+            return;
+          }
+          detachedNode(n);
+        });
+      }
+    });
+    flags.dom && console.groupEnd();
+  }
+  function takeRecords(node) {
+    node = window.wrap(node);
+    if (!node) {
+      node = window.wrap(document);
+    }
+    while (node.parentNode) {
+      node = node.parentNode;
+    }
+    var observer = node.__observer;
+    if (observer) {
+      handler(node, observer.takeRecords());
+      takeMutations();
+    }
+  }
+  var forEach = Array.prototype.forEach.call.bind(Array.prototype.forEach);
+  function observe(inRoot) {
+    if (inRoot.__observer) {
+      return;
+    }
+    var observer = new MutationObserver(handler.bind(this, inRoot));
+    observer.observe(inRoot, {
+      childList: true,
+      subtree: true
+    });
+    inRoot.__observer = observer;
+  }
+  function upgradeDocument(doc) {
+    doc = window.wrap(doc);
+    flags.dom && console.group("upgradeDocument: ", doc.baseURI.split("/").pop());
+    var isMainDocument = doc === window.wrap(document);
+    addedNode(doc, isMainDocument);
+    observe(doc);
+    flags.dom && console.groupEnd();
+  }
+  function upgradeDocumentTree(doc) {
+    forDocumentTree(doc, upgradeDocument);
+  }
+  var originalCreateShadowRoot = Element.prototype.createShadowRoot;
+  if (originalCreateShadowRoot) {
+    Element.prototype.createShadowRoot = function() {
+      var root = originalCreateShadowRoot.call(this);
+      window.CustomElements.watchShadow(this);
+      return root;
+    };
+  }
+  scope.watchShadow = watchShadow;
+  scope.upgradeDocumentTree = upgradeDocumentTree;
+  scope.upgradeDocument = upgradeDocument;
+  scope.upgradeSubtree = addedSubtree;
+  scope.upgradeAll = addedNode;
+  scope.attached = attached;
+  scope.takeRecords = takeRecords;
+});
+
+window.CustomElements.addModule(function(scope) {
+  var flags = scope.flags;
+  function upgrade(node, isAttached) {
+    if (node.localName === "template") {
+      if (window.HTMLTemplateElement && HTMLTemplateElement.decorate) {
+        HTMLTemplateElement.decorate(node);
+      }
+    }
+    if (!node.__upgraded__ && node.nodeType === Node.ELEMENT_NODE) {
+      var is = node.getAttribute("is");
+      var definition = scope.getRegisteredDefinition(node.localName) || scope.getRegisteredDefinition(is);
+      if (definition) {
+        if (is && definition.tag == node.localName || !is && !definition.extends) {
+          return upgradeWithDefinition(node, definition, isAttached);
+        }
+      }
+    }
+  }
+  function upgradeWithDefinition(element, definition, isAttached) {
+    flags.upgrade && console.group("upgrade:", element.localName);
+    if (definition.is) {
+      element.setAttribute("is", definition.is);
+    }
+    implementPrototype(element, definition);
+    element.__upgraded__ = true;
+    created(element);
+    if (isAttached) {
+      scope.attached(element);
+    }
+    scope.upgradeSubtree(element, isAttached);
+    flags.upgrade && console.groupEnd();
+    return element;
+  }
+  function implementPrototype(element, definition) {
+    if (Object.__proto__) {
+      element.__proto__ = definition.prototype;
+    } else {
+      customMixin(element, definition.prototype, definition.native);
+      element.__proto__ = definition.prototype;
+    }
+  }
+  function customMixin(inTarget, inSrc, inNative) {
+    var used = {};
+    var p = inSrc;
+    while (p !== inNative && p !== HTMLElement.prototype) {
+      var keys = Object.getOwnPropertyNames(p);
+      for (var i = 0, k; k = keys[i]; i++) {
+        if (!used[k]) {
+          Object.defineProperty(inTarget, k, Object.getOwnPropertyDescriptor(p, k));
+          used[k] = 1;
+        }
+      }
+      p = Object.getPrototypeOf(p);
+    }
+  }
+  function created(element) {
+    if (element.createdCallback) {
+      element.createdCallback();
+    }
+  }
+  scope.upgrade = upgrade;
+  scope.upgradeWithDefinition = upgradeWithDefinition;
+  scope.implementPrototype = implementPrototype;
+});
+
+window.CustomElements.addModule(function(scope) {
+  var isIE = scope.isIE;
+  var upgradeDocumentTree = scope.upgradeDocumentTree;
+  var upgradeAll = scope.upgradeAll;
+  var upgradeWithDefinition = scope.upgradeWithDefinition;
+  var implementPrototype = scope.implementPrototype;
+  var useNative = scope.useNative;
+  function register(name, options) {
+    var definition = options || {};
+    if (!name) {
+      throw new Error("document.registerElement: first argument `name` must not be empty");
+    }
+    if (name.indexOf("-") < 0) {
+      throw new Error("document.registerElement: first argument ('name') must contain a dash ('-'). Argument provided was '" + String(name) + "'.");
+    }
+    if (isReservedTag(name)) {
+      throw new Error("Failed to execute 'registerElement' on 'Document': Registration failed for type '" + String(name) + "'. The type name is invalid.");
+    }
+    if (getRegisteredDefinition(name)) {
+      throw new Error("DuplicateDefinitionError: a type with name '" + String(name) + "' is already registered");
+    }
+    if (!definition.prototype) {
+      definition.prototype = Object.create(HTMLElement.prototype);
+    }
+    definition.__name = name.toLowerCase();
+    definition.lifecycle = definition.lifecycle || {};
+    definition.ancestry = ancestry(definition.extends);
+    resolveTagName(definition);
+    resolvePrototypeChain(definition);
+    overrideAttributeApi(definition.prototype);
+    registerDefinition(definition.__name, definition);
+    definition.ctor = generateConstructor(definition);
+    definition.ctor.prototype = definition.prototype;
+    definition.prototype.constructor = definition.ctor;
+    if (scope.ready) {
+      upgradeDocumentTree(document);
+    }
+    return definition.ctor;
+  }
+  function overrideAttributeApi(prototype) {
+    if (prototype.setAttribute._polyfilled) {
+      return;
+    }
+    var setAttribute = prototype.setAttribute;
+    prototype.setAttribute = function(name, value) {
+      changeAttribute.call(this, name, value, setAttribute);
+    };
+    var removeAttribute = prototype.removeAttribute;
+    prototype.removeAttribute = function(name) {
+      changeAttribute.call(this, name, null, removeAttribute);
+    };
+    prototype.setAttribute._polyfilled = true;
+  }
+  function changeAttribute(name, value, operation) {
+    name = name.toLowerCase();
+    var oldValue = this.getAttribute(name);
+    operation.apply(this, arguments);
+    var newValue = this.getAttribute(name);
+    if (this.attributeChangedCallback && newValue !== oldValue) {
+      this.attributeChangedCallback(name, oldValue, newValue);
+    }
+  }
+  function isReservedTag(name) {
+    for (var i = 0; i < reservedTagList.length; i++) {
+      if (name === reservedTagList[i]) {
+        return true;
+      }
+    }
+  }
+  var reservedTagList = [ "annotation-xml", "color-profile", "font-face", "font-face-src", "font-face-uri", "font-face-format", "font-face-name", "missing-glyph" ];
+  function ancestry(extnds) {
+    var extendee = getRegisteredDefinition(extnds);
+    if (extendee) {
+      return ancestry(extendee.extends).concat([ extendee ]);
+    }
+    return [];
+  }
+  function resolveTagName(definition) {
+    var baseTag = definition.extends;
+    for (var i = 0, a; a = definition.ancestry[i]; i++) {
+      baseTag = a.is && a.tag;
+    }
+    definition.tag = baseTag || definition.__name;
+    if (baseTag) {
+      definition.is = definition.__name;
+    }
+  }
+  function resolvePrototypeChain(definition) {
+    if (!Object.__proto__) {
+      var nativePrototype = HTMLElement.prototype;
+      if (definition.is) {
+        var inst = document.createElement(definition.tag);
+        nativePrototype = Object.getPrototypeOf(inst);
+      }
+      var proto = definition.prototype, ancestor;
+      var foundPrototype = false;
+      while (proto) {
+        if (proto == nativePrototype) {
+          foundPrototype = true;
+        }
+        ancestor = Object.getPrototypeOf(proto);
+        if (ancestor) {
+          proto.__proto__ = ancestor;
+        }
+        proto = ancestor;
+      }
+      if (!foundPrototype) {
+        console.warn(definition.tag + " prototype not found in prototype chain for " + definition.is);
+      }
+      definition.native = nativePrototype;
+    }
+  }
+  function instantiate(definition) {
+    return upgradeWithDefinition(domCreateElement(definition.tag), definition);
+  }
+  var registry = {};
+  function getRegisteredDefinition(name) {
+    if (name) {
+      return registry[name.toLowerCase()];
+    }
+  }
+  function registerDefinition(name, definition) {
+    registry[name] = definition;
+  }
+  function generateConstructor(definition) {
+    return function() {
+      return instantiate(definition);
+    };
+  }
+  var HTML_NAMESPACE = "http://www.w3.org/1999/xhtml";
+  function createElementNS(namespace, tag, typeExtension) {
+    if (namespace === HTML_NAMESPACE) {
+      return createElement(tag, typeExtension);
+    } else {
+      return domCreateElementNS(namespace, tag);
+    }
+  }
+  function createElement(tag, typeExtension) {
+    if (tag) {
+      tag = tag.toLowerCase();
+    }
+    if (typeExtension) {
+      typeExtension = typeExtension.toLowerCase();
+    }
+    var definition = getRegisteredDefinition(typeExtension || tag);
+    if (definition) {
+      if (tag == definition.tag && typeExtension == definition.is) {
+        return new definition.ctor();
+      }
+      if (!typeExtension && !definition.is) {
+        return new definition.ctor();
+      }
+    }
+    var element;
+    if (typeExtension) {
+      element = createElement(tag);
+      element.setAttribute("is", typeExtension);
+      return element;
+    }
+    element = domCreateElement(tag);
+    if (tag.indexOf("-") >= 0) {
+      implementPrototype(element, HTMLElement);
+    }
+    return element;
+  }
+  var domCreateElement = document.createElement.bind(document);
+  var domCreateElementNS = document.createElementNS.bind(document);
+  var isInstance;
+  if (!Object.__proto__ && !useNative) {
+    isInstance = function(obj, ctor) {
+      if (obj instanceof ctor) {
+        return true;
+      }
+      var p = obj;
+      while (p) {
+        if (p === ctor.prototype) {
+          return true;
+        }
+        p = p.__proto__;
+      }
+      return false;
+    };
+  } else {
+    isInstance = function(obj, base) {
+      return obj instanceof base;
+    };
+  }
+  function wrapDomMethodToForceUpgrade(obj, methodName) {
+    var orig = obj[methodName];
+    obj[methodName] = function() {
+      var n = orig.apply(this, arguments);
+      upgradeAll(n);
+      return n;
+    };
+  }
+  wrapDomMethodToForceUpgrade(Node.prototype, "cloneNode");
+  wrapDomMethodToForceUpgrade(document, "importNode");
+  if (isIE) {
+    (function() {
+      var importNode = document.importNode;
+      document.importNode = function() {
+        var n = importNode.apply(document, arguments);
+        if (n.nodeType == n.DOCUMENT_FRAGMENT_NODE) {
+          var f = document.createDocumentFragment();
+          f.appendChild(n);
+          return f;
+        } else {
+          return n;
+        }
+      };
+    })();
+  }
+  document.registerElement = register;
+  document.createElement = createElement;
+  document.createElementNS = createElementNS;
+  scope.registry = registry;
+  scope.instanceof = isInstance;
+  scope.reservedTagList = reservedTagList;
+  scope.getRegisteredDefinition = getRegisteredDefinition;
+  document.register = document.registerElement;
+});
+
+(function(scope) {
+  var useNative = scope.useNative;
+  var initializeModules = scope.initializeModules;
+  var isIE = scope.isIE;
+  if (useNative) {
+    var nop = function() {};
+    scope.watchShadow = nop;
+    scope.upgrade = nop;
+    scope.upgradeAll = nop;
+    scope.upgradeDocumentTree = nop;
+    scope.upgradeSubtree = nop;
+    scope.takeRecords = nop;
+    scope.instanceof = function(obj, base) {
+      return obj instanceof base;
+    };
+  } else {
+    initializeModules();
+  }
+  var upgradeDocumentTree = scope.upgradeDocumentTree;
+  var upgradeDocument = scope.upgradeDocument;
+  if (!window.wrap) {
+    if (window.ShadowDOMPolyfill) {
+      window.wrap = window.ShadowDOMPolyfill.wrapIfNeeded;
+      window.unwrap = window.ShadowDOMPolyfill.unwrapIfNeeded;
+    } else {
+      window.wrap = window.unwrap = function(node) {
+        return node;
+      };
+    }
+  }
+  if (window.HTMLImports) {
+    window.HTMLImports.__importsParsingHook = function(elt) {
+      if (elt.import) {
+        upgradeDocument(wrap(elt.import));
+      }
+    };
+  }
+  function bootstrap() {
+    upgradeDocumentTree(window.wrap(document));
+    window.CustomElements.ready = true;
+    var requestAnimationFrame = window.requestAnimationFrame || function(f) {
+      setTimeout(f, 16);
+    };
+    requestAnimationFrame(function() {
+      setTimeout(function() {
+        window.CustomElements.readyTime = Date.now();
+        if (window.HTMLImports) {
+          window.CustomElements.elapsed = window.CustomElements.readyTime - window.HTMLImports.readyTime;
+        }
+        document.dispatchEvent(new CustomEvent("WebComponentsReady", {
+          bubbles: true
+        }));
+      });
+    });
+  }
+  if (document.readyState === "complete" || scope.flags.eager) {
+    bootstrap();
+  } else if (document.readyState === "interactive" && !window.attachEvent && (!window.HTMLImports || window.HTMLImports.ready)) {
+    bootstrap();
+  } else {
+    var loadEvent = window.HTMLImports && !window.HTMLImports.ready ? "HTMLImportsLoaded" : "DOMContentLoaded";
+    window.addEventListener(loadEvent, bootstrap);
+  }
+})(window.CustomElements);