Removed Polymer from Observatory deps

packages/web_components/lib/HTMLImports.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.HTMLImports = window.HTMLImports || {
+  flags: {}
+};
+
+(function(scope) {
+  var IMPORT_LINK_TYPE = "import";
+  var useNative = Boolean(IMPORT_LINK_TYPE in document.createElement("link"));
+  var hasShadowDOMPolyfill = Boolean(window.ShadowDOMPolyfill);
+  var wrap = function(node) {
+    return hasShadowDOMPolyfill ? window.ShadowDOMPolyfill.wrapIfNeeded(node) : node;
+  };
+  var rootDocument = wrap(document);
+  var currentScriptDescriptor = {
+    get: function() {
+      var script = window.HTMLImports.currentScript || document.currentScript || (document.readyState !== "complete" ? document.scripts[document.scripts.length - 1] : null);
+      return wrap(script);
+    },
+    configurable: true
+  };
+  Object.defineProperty(document, "_currentScript", currentScriptDescriptor);
+  Object.defineProperty(rootDocument, "_currentScript", currentScriptDescriptor);
+  var isIE = /Trident/.test(navigator.userAgent);
+  function whenReady(callback, doc) {
+    doc = doc || rootDocument;
+    whenDocumentReady(function() {
+      watchImportsLoad(callback, doc);
+    }, doc);
+  }
+  var requiredReadyState = isIE ? "complete" : "interactive";
+  var READY_EVENT = "readystatechange";
+  function isDocumentReady(doc) {
+    return doc.readyState === "complete" || doc.readyState === requiredReadyState;
+  }
+  function whenDocumentReady(callback, doc) {
+    if (!isDocumentReady(doc)) {
+      var checkReady = function() {
+        if (doc.readyState === "complete" || doc.readyState === requiredReadyState) {
+          doc.removeEventListener(READY_EVENT, checkReady);
+          whenDocumentReady(callback, doc);
+        }
+      };
+      doc.addEventListener(READY_EVENT, checkReady);
+    } else if (callback) {
+      callback();
+    }
+  }
+  function markTargetLoaded(event) {
+    event.target.__loaded = true;
+  }
+  function watchImportsLoad(callback, doc) {
+    var imports = doc.querySelectorAll("link[rel=import]");
+    var parsedCount = 0, importCount = imports.length, newImports = [], errorImports = [];
+    function checkDone() {
+      if (parsedCount == importCount && callback) {
+        callback({
+          allImports: imports,
+          loadedImports: newImports,
+          errorImports: errorImports
+        });
+      }
+    }
+    function loadedImport(e) {
+      markTargetLoaded(e);
+      newImports.push(this);
+      parsedCount++;
+      checkDone();
+    }
+    function errorLoadingImport(e) {
+      errorImports.push(this);
+      parsedCount++;
+      checkDone();
+    }
+    if (importCount) {
+      for (var i = 0, imp; i < importCount && (imp = imports[i]); i++) {
+        if (isImportLoaded(imp)) {
+          newImports.push(this);
+          parsedCount++;
+          checkDone();
+        } else {
+          imp.addEventListener("load", loadedImport);
+          imp.addEventListener("error", errorLoadingImport);
+        }
+      }
+    } else {
+      checkDone();
+    }
+  }
+  function isImportLoaded(link) {
+    return useNative ? link.__loaded || link.import && link.import.readyState !== "loading" : link.__importParsed;
+  }
+  if (useNative) {
+    new MutationObserver(function(mxns) {
+      for (var i = 0, l = mxns.length, m; i < l && (m = mxns[i]); i++) {
+        if (m.addedNodes) {
+          handleImports(m.addedNodes);
+        }
+      }
+    }).observe(document.head, {
+      childList: true
+    });
+    function handleImports(nodes) {
+      for (var i = 0, l = nodes.length, n; i < l && (n = nodes[i]); i++) {
+        if (isImport(n)) {
+          handleImport(n);
+        }
+      }
+    }
+    function isImport(element) {
+      return element.localName === "link" && element.rel === "import";
+    }
+    function handleImport(element) {
+      var loaded = element.import;
+      if (loaded) {
+        markTargetLoaded({
+          target: element
+        });
+      } else {
+        element.addEventListener("load", markTargetLoaded);
+        element.addEventListener("error", markTargetLoaded);
+      }
+    }
+    (function() {
+      if (document.readyState === "loading") {
+        var imports = document.querySelectorAll("link[rel=import]");
+        for (var i = 0, l = imports.length, imp; i < l && (imp = imports[i]); i++) {
+          handleImport(imp);
+        }
+      }
+    })();
+  }
+  whenReady(function(detail) {
+    window.HTMLImports.ready = true;
+    window.HTMLImports.readyTime = new Date().getTime();
+    var evt = rootDocument.createEvent("CustomEvent");
+    evt.initCustomEvent("HTMLImportsLoaded", true, true, detail);
+    rootDocument.dispatchEvent(evt);
+  });
+  scope.IMPORT_LINK_TYPE = IMPORT_LINK_TYPE;
+  scope.useNative = useNative;
+  scope.rootDocument = rootDocument;
+  scope.whenReady = whenReady;
+  scope.isIE = isIE;
+})(window.HTMLImports);
+
+(function(scope) {
+  var modules = [];
+  var addModule = function(module) {
+    modules.push(module);
+  };
+  var initializeModules = function() {
+    modules.forEach(function(module) {
+      module(scope);
+    });
+  };
+  scope.addModule = addModule;
+  scope.initializeModules = initializeModules;
+})(window.HTMLImports);
+
+window.HTMLImports.addModule(function(scope) {
+  var CSS_URL_REGEXP = /(url\()([^)]*)(\))/g;
+  var CSS_IMPORT_REGEXP = /(@import[\s]+(?!url\())([^;]*)(;)/g;
+  var path = {
+    resolveUrlsInStyle: function(style, linkUrl) {
+      var doc = style.ownerDocument;
+      var resolver = doc.createElement("a");
+      style.textContent = this.resolveUrlsInCssText(style.textContent, linkUrl, resolver);
+      return style;
+    },
+    resolveUrlsInCssText: function(cssText, linkUrl, urlObj) {
+      var r = this.replaceUrls(cssText, urlObj, linkUrl, CSS_URL_REGEXP);
+      r = this.replaceUrls(r, urlObj, linkUrl, CSS_IMPORT_REGEXP);
+      return r;
+    },
+    replaceUrls: function(text, urlObj, linkUrl, regexp) {
+      return text.replace(regexp, function(m, pre, url, post) {
+        var urlPath = url.replace(/["']/g, "");
+        if (linkUrl) {
+          urlPath = new URL(urlPath, linkUrl).href;
+        }
+        urlObj.href = urlPath;
+        urlPath = urlObj.href;
+        return pre + "'" + urlPath + "'" + post;
+      });
+    }
+  };
+  scope.path = path;
+});
+
+window.HTMLImports.addModule(function(scope) {
+  var xhr = {
+    async: true,
+    ok: function(request) {
+      return request.status >= 200 && request.status < 300 || request.status === 304 || request.status === 0;
+    },
+    load: function(url, next, nextContext) {
+      var request = new XMLHttpRequest();
+      if (scope.flags.debug || scope.flags.bust) {
+        url += "?" + Math.random();
+      }
+      request.open("GET", url, xhr.async);
+      request.addEventListener("readystatechange", function(e) {
+        if (request.readyState === 4) {
+          var redirectedUrl = null;
+          try {
+            var locationHeader = request.getResponseHeader("Location");
+            if (locationHeader) {
+              redirectedUrl = locationHeader.substr(0, 1) === "/" ? location.origin + locationHeader : locationHeader;
+            }
+          } catch (e) {
+            console.error(e.message);
+          }
+          next.call(nextContext, !xhr.ok(request) && request, request.response || request.responseText, redirectedUrl);
+        }
+      });
+      request.send();
+      return request;
+    },
+    loadDocument: function(url, next, nextContext) {
+      this.load(url, next, nextContext).responseType = "document";
+    }
+  };
+  scope.xhr = xhr;
+});
+
+window.HTMLImports.addModule(function(scope) {
+  var xhr = scope.xhr;
+  var flags = scope.flags;
+  var Loader = function(onLoad, onComplete) {
+    this.cache = {};
+    this.onload = onLoad;
+    this.oncomplete = onComplete;
+    this.inflight = 0;
+    this.pending = {};
+  };
+  Loader.prototype = {
+    addNodes: function(nodes) {
+      this.inflight += nodes.length;
+      for (var i = 0, l = nodes.length, n; i < l && (n = nodes[i]); i++) {
+        this.require(n);
+      }
+      this.checkDone();
+    },
+    addNode: function(node) {
+      this.inflight++;
+      this.require(node);
+      this.checkDone();
+    },
+    require: function(elt) {
+      var url = elt.src || elt.href;
+      elt.__nodeUrl = url;
+      if (!this.dedupe(url, elt)) {
+        this.fetch(url, elt);
+      }
+    },
+    dedupe: function(url, elt) {
+      if (this.pending[url]) {
+        this.pending[url].push(elt);
+        return true;
+      }
+      var resource;
+      if (this.cache[url]) {
+        this.onload(url, elt, this.cache[url]);
+        this.tail();
+        return true;
+      }
+      this.pending[url] = [ elt ];
+      return false;
+    },
+    fetch: function(url, elt) {
+      flags.load && console.log("fetch", url, elt);
+      if (!url) {
+        setTimeout(function() {
+          this.receive(url, elt, {
+            error: "href must be specified"
+          }, null);
+        }.bind(this), 0);
+      } else if (url.match(/^data:/)) {
+        var pieces = url.split(",");
+        var header = pieces[0];
+        var body = pieces[1];
+        if (header.indexOf(";base64") > -1) {
+          body = atob(body);
+        } else {
+          body = decodeURIComponent(body);
+        }
+        setTimeout(function() {
+          this.receive(url, elt, null, body);
+        }.bind(this), 0);
+      } else {
+        var receiveXhr = function(err, resource, redirectedUrl) {
+          this.receive(url, elt, err, resource, redirectedUrl);
+        }.bind(this);
+        xhr.load(url, receiveXhr);
+      }
+    },
+    receive: function(url, elt, err, resource, redirectedUrl) {
+      this.cache[url] = resource;
+      var $p = this.pending[url];
+      for (var i = 0, l = $p.length, p; i < l && (p = $p[i]); i++) {
+        this.onload(url, p, resource, err, redirectedUrl);
+        this.tail();
+      }
+      this.pending[url] = null;
+    },
+    tail: function() {
+      --this.inflight;
+      this.checkDone();
+    },
+    checkDone: function() {
+      if (!this.inflight) {
+        this.oncomplete();
+      }
+    }
+  };
+  scope.Loader = Loader;
+});
+
+window.HTMLImports.addModule(function(scope) {
+  var Observer = function(addCallback) {
+    this.addCallback = addCallback;
+    this.mo = new MutationObserver(this.handler.bind(this));
+  };
+  Observer.prototype = {
+    handler: function(mutations) {
+      for (var i = 0, l = mutations.length, m; i < l && (m = mutations[i]); i++) {
+        if (m.type === "childList" && m.addedNodes.length) {
+          this.addedNodes(m.addedNodes);
+        }
+      }
+    },
+    addedNodes: function(nodes) {
+      if (this.addCallback) {
+        this.addCallback(nodes);
+      }
+      for (var i = 0, l = nodes.length, n, loading; i < l && (n = nodes[i]); i++) {
+        if (n.children && n.children.length) {
+          this.addedNodes(n.children);
+        }
+      }
+    },
+    observe: function(root) {
+      this.mo.observe(root, {
+        childList: true,
+        subtree: true
+      });
+    }
+  };
+  scope.Observer = Observer;
+});
+
+window.HTMLImports.addModule(function(scope) {
+  var path = scope.path;
+  var rootDocument = scope.rootDocument;
+  var flags = scope.flags;
+  var isIE = scope.isIE;
+  var IMPORT_LINK_TYPE = scope.IMPORT_LINK_TYPE;
+  var IMPORT_SELECTOR = "link[rel=" + IMPORT_LINK_TYPE + "]";
+  var importParser = {
+    documentSelectors: IMPORT_SELECTOR,
+    importsSelectors: [ IMPORT_SELECTOR, "link[rel=stylesheet]:not([type])", "style:not([type])", "script:not([type])", 'script[type="application/javascript"]', 'script[type="text/javascript"]' ].join(","),
+    map: {
+      link: "parseLink",
+      script: "parseScript",
+      style: "parseStyle"
+    },
+    dynamicElements: [],
+    parseNext: function() {
+      var next = this.nextToParse();
+      if (next) {
+        this.parse(next);
+      }
+    },
+    parse: function(elt) {
+      if (this.isParsed(elt)) {
+        flags.parse && console.log("[%s] is already parsed", elt.localName);
+        return;
+      }
+      var fn = this[this.map[elt.localName]];
+      if (fn) {
+        this.markParsing(elt);
+        fn.call(this, elt);
+      }
+    },
+    parseDynamic: function(elt, quiet) {
+      this.dynamicElements.push(elt);
+      if (!quiet) {
+        this.parseNext();
+      }
+    },
+    markParsing: function(elt) {
+      flags.parse && console.log("parsing", elt);
+      this.parsingElement = elt;
+    },
+    markParsingComplete: function(elt) {
+      elt.__importParsed = true;
+      this.markDynamicParsingComplete(elt);
+      if (elt.__importElement) {
+        elt.__importElement.__importParsed = true;
+        this.markDynamicParsingComplete(elt.__importElement);
+      }
+      this.parsingElement = null;
+      flags.parse && console.log("completed", elt);
+    },
+    markDynamicParsingComplete: function(elt) {
+      var i = this.dynamicElements.indexOf(elt);
+      if (i >= 0) {
+        this.dynamicElements.splice(i, 1);
+      }
+    },
+    parseImport: function(elt) {
+      elt.import = elt.__doc;
+      if (window.HTMLImports.__importsParsingHook) {
+        window.HTMLImports.__importsParsingHook(elt);
+      }
+      if (elt.import) {
+        elt.import.__importParsed = true;
+      }
+      this.markParsingComplete(elt);
+      if (elt.__resource && !elt.__error) {
+        elt.dispatchEvent(new CustomEvent("load", {
+          bubbles: false
+        }));
+      } else {
+        elt.dispatchEvent(new CustomEvent("error", {
+          bubbles: false
+        }));
+      }
+      if (elt.__pending) {
+        var fn;
+        while (elt.__pending.length) {
+          fn = elt.__pending.shift();
+          if (fn) {
+            fn({
+              target: elt
+            });
+          }
+        }
+      }
+      this.parseNext();
+    },
+    parseLink: function(linkElt) {
+      if (nodeIsImport(linkElt)) {
+        this.parseImport(linkElt);
+      } else {
+        linkElt.href = linkElt.href;
+        this.parseGeneric(linkElt);
+      }
+    },
+    parseStyle: function(elt) {
+      var src = elt;
+      elt = cloneStyle(elt);
+      src.__appliedElement = elt;
+      elt.__importElement = src;
+      this.parseGeneric(elt);
+    },
+    parseGeneric: function(elt) {
+      this.trackElement(elt);
+      this.addElementToDocument(elt);
+    },
+    rootImportForElement: function(elt) {
+      var n = elt;
+      while (n.ownerDocument.__importLink) {
+        n = n.ownerDocument.__importLink;
+      }
+      return n;
+    },
+    addElementToDocument: function(elt) {
+      var port = this.rootImportForElement(elt.__importElement || elt);
+      port.parentNode.insertBefore(elt, port);
+    },
+    trackElement: function(elt, callback) {
+      var self = this;
+      var done = function(e) {
+        elt.removeEventListener("load", done);
+        elt.removeEventListener("error", done);
+        if (callback) {
+          callback(e);
+        }
+        self.markParsingComplete(elt);
+        self.parseNext();
+      };
+      elt.addEventListener("load", done);
+      elt.addEventListener("error", done);
+      if (isIE && elt.localName === "style") {
+        var fakeLoad = false;
+        if (elt.textContent.indexOf("@import") == -1) {
+          fakeLoad = true;
+        } else if (elt.sheet) {
+          fakeLoad = true;
+          var csr = elt.sheet.cssRules;
+          var len = csr ? csr.length : 0;
+          for (var i = 0, r; i < len && (r = csr[i]); i++) {
+            if (r.type === CSSRule.IMPORT_RULE) {
+              fakeLoad = fakeLoad && Boolean(r.styleSheet);
+            }
+          }
+        }
+        if (fakeLoad) {
+          setTimeout(function() {
+            elt.dispatchEvent(new CustomEvent("load", {
+              bubbles: false
+            }));
+          });
+        }
+      }
+    },
+    parseScript: function(scriptElt) {
+      var script = document.createElement("script");
+      script.__importElement = scriptElt;
+      script.src = scriptElt.src ? scriptElt.src : generateScriptDataUrl(scriptElt);
+      scope.currentScript = scriptElt;
+      this.trackElement(script, function(e) {
+        if (script.parentNode) {
+          script.parentNode.removeChild(script);
+        }
+        scope.currentScript = null;
+      });
+      this.addElementToDocument(script);
+    },
+    nextToParse: function() {
+      this._mayParse = [];
+      return !this.parsingElement && (this.nextToParseInDoc(rootDocument) || this.nextToParseDynamic());
+    },
+    nextToParseInDoc: function(doc, link) {
+      if (doc && this._mayParse.indexOf(doc) < 0) {
+        this._mayParse.push(doc);
+        var nodes = doc.querySelectorAll(this.parseSelectorsForNode(doc));
+        for (var i = 0, l = nodes.length, n; i < l && (n = nodes[i]); i++) {
+          if (!this.isParsed(n)) {
+            if (this.hasResource(n)) {
+              return nodeIsImport(n) ? this.nextToParseInDoc(n.__doc, n) : n;
+            } else {
+              return;
+            }
+          }
+        }
+      }
+      return link;
+    },
+    nextToParseDynamic: function() {
+      return this.dynamicElements[0];
+    },
+    parseSelectorsForNode: function(node) {
+      var doc = node.ownerDocument || node;
+      return doc === rootDocument ? this.documentSelectors : this.importsSelectors;
+    },
+    isParsed: function(node) {
+      return node.__importParsed;
+    },
+    needsDynamicParsing: function(elt) {
+      return this.dynamicElements.indexOf(elt) >= 0;
+    },
+    hasResource: function(node) {
+      if (nodeIsImport(node) && node.__doc === undefined) {
+        return false;
+      }
+      return true;
+    }
+  };
+  function nodeIsImport(elt) {
+    return elt.localName === "link" && elt.rel === IMPORT_LINK_TYPE;
+  }
+  function generateScriptDataUrl(script) {
+    var scriptContent = generateScriptContent(script);
+    return "data:text/javascript;charset=utf-8," + encodeURIComponent(scriptContent);
+  }
+  function generateScriptContent(script) {
+    return script.textContent + generateSourceMapHint(script);
+  }
+  function generateSourceMapHint(script) {
+    var owner = script.ownerDocument;
+    owner.__importedScripts = owner.__importedScripts || 0;
+    var moniker = script.ownerDocument.baseURI;
+    var num = owner.__importedScripts ? "-" + owner.__importedScripts : "";
+    owner.__importedScripts++;
+    return "\n//# sourceURL=" + moniker + num + ".js\n";
+  }
+  function cloneStyle(style) {
+    var clone = style.ownerDocument.createElement("style");
+    clone.textContent = style.textContent;
+    path.resolveUrlsInStyle(clone);
+    return clone;
+  }
+  scope.parser = importParser;
+  scope.IMPORT_SELECTOR = IMPORT_SELECTOR;
+});
+
+window.HTMLImports.addModule(function(scope) {
+  var flags = scope.flags;
+  var IMPORT_LINK_TYPE = scope.IMPORT_LINK_TYPE;
+  var IMPORT_SELECTOR = scope.IMPORT_SELECTOR;
+  var rootDocument = scope.rootDocument;
+  var Loader = scope.Loader;
+  var Observer = scope.Observer;
+  var parser = scope.parser;
+  var importer = {
+    documents: {},
+    documentPreloadSelectors: IMPORT_SELECTOR,
+    importsPreloadSelectors: [ IMPORT_SELECTOR ].join(","),
+    loadNode: function(node) {
+      importLoader.addNode(node);
+    },
+    loadSubtree: function(parent) {
+      var nodes = this.marshalNodes(parent);
+      importLoader.addNodes(nodes);
+    },
+    marshalNodes: function(parent) {
+      return parent.querySelectorAll(this.loadSelectorsForNode(parent));
+    },
+    loadSelectorsForNode: function(node) {
+      var doc = node.ownerDocument || node;
+      return doc === rootDocument ? this.documentPreloadSelectors : this.importsPreloadSelectors;
+    },
+    loaded: function(url, elt, resource, err, redirectedUrl) {
+      flags.load && console.log("loaded", url, elt);
+      elt.__resource = resource;
+      elt.__error = err;
+      if (isImportLink(elt)) {
+        var doc = this.documents[url];
+        if (doc === undefined) {
+          doc = err ? null : makeDocument(resource, redirectedUrl || url);
+          if (doc) {
+            doc.__importLink = elt;
+            this.bootDocument(doc);
+          }
+          this.documents[url] = doc;
+        }
+        elt.__doc = doc;
+      }
+      parser.parseNext();
+    },
+    bootDocument: function(doc) {
+      this.loadSubtree(doc);
+      this.observer.observe(doc);
+      parser.parseNext();
+    },
+    loadedAll: function() {
+      parser.parseNext();
+    }
+  };
+  var importLoader = new Loader(importer.loaded.bind(importer), importer.loadedAll.bind(importer));
+  importer.observer = new Observer();
+  function isImportLink(elt) {
+    return isLinkRel(elt, IMPORT_LINK_TYPE);
+  }
+  function isLinkRel(elt, rel) {
+    return elt.localName === "link" && elt.getAttribute("rel") === rel;
+  }
+  function hasBaseURIAccessor(doc) {
+    return !!Object.getOwnPropertyDescriptor(doc, "baseURI");
+  }
+  function makeDocument(resource, url) {
+    var doc = document.implementation.createHTMLDocument(IMPORT_LINK_TYPE);
+    doc._URL = url;
+    var base = doc.createElement("base");
+    base.setAttribute("href", url);
+    if (!doc.baseURI && !hasBaseURIAccessor(doc)) {
+      Object.defineProperty(doc, "baseURI", {
+        value: url
+      });
+    }
+    var meta = doc.createElement("meta");
+    meta.setAttribute("charset", "utf-8");
+    doc.head.appendChild(meta);
+    doc.head.appendChild(base);
+    doc.body.innerHTML = resource;
+    if (window.HTMLTemplateElement && HTMLTemplateElement.bootstrap) {
+      HTMLTemplateElement.bootstrap(doc);
+    }
+    return doc;
+  }
+  if (!document.baseURI) {
+    var baseURIDescriptor = {
+      get: function() {
+        var base = document.querySelector("base");
+        return base ? base.href : window.location.href;
+      },
+      configurable: true
+    };
+    Object.defineProperty(document, "baseURI", baseURIDescriptor);
+    Object.defineProperty(rootDocument, "baseURI", baseURIDescriptor);
+  }
+  scope.importer = importer;
+  scope.importLoader = importLoader;
+});
+
+window.HTMLImports.addModule(function(scope) {
+  var parser = scope.parser;
+  var importer = scope.importer;
+  var dynamic = {
+    added: function(nodes) {
+      var owner, parsed, loading;
+      for (var i = 0, l = nodes.length, n; i < l && (n = nodes[i]); i++) {
+        if (!owner) {
+          owner = n.ownerDocument;
+          parsed = parser.isParsed(owner);
+        }
+        loading = this.shouldLoadNode(n);
+        if (loading) {
+          importer.loadNode(n);
+        }
+        if (this.shouldParseNode(n) && parsed) {
+          parser.parseDynamic(n, loading);
+        }
+      }
+    },
+    shouldLoadNode: function(node) {
+      return node.nodeType === 1 && matches.call(node, importer.loadSelectorsForNode(node));
+    },
+    shouldParseNode: function(node) {
+      return node.nodeType === 1 && matches.call(node, parser.parseSelectorsForNode(node));
+    }
+  };
+  importer.observer.addCallback = dynamic.added.bind(dynamic);
+  var matches = HTMLElement.prototype.matches || HTMLElement.prototype.matchesSelector || HTMLElement.prototype.webkitMatchesSelector || HTMLElement.prototype.mozMatchesSelector || HTMLElement.prototype.msMatchesSelector;
+});
+
+(function(scope) {
+  var initializeModules = scope.initializeModules;
+  var isIE = scope.isIE;
+  if (scope.useNative) {
+    return;
+  }
+  initializeModules();
+  var rootDocument = scope.rootDocument;
+  function bootstrap() {
+    window.HTMLImports.importer.bootDocument(rootDocument);
+  }
+  if (document.readyState === "complete" || document.readyState === "interactive" && !window.attachEvent) {
+    bootstrap();
+  } else {
+    document.addEventListener("DOMContentLoaded", bootstrap);
+  }
+})(window.HTMLImports);