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third_party/polymer/components/webcomponentsjs/webcomponents.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 0.7.22
-(function() {
-  window.WebComponents = window.WebComponents || {
-    flags: {}
-  };
+// @version 0.6.1
+window.WebComponents = window.WebComponents || {};
+
+(function(scope) {
+  var flags = scope.flags || {};
   var file = "webcomponents.js";
   var script = document.querySelector('script[src*="' + file + '"]');
-  var flags = {};
   if (!flags.noOpts) {
-    location.search.slice(1).split("&").forEach(function(option) {
-      var parts = option.split("=");
-      var match;
-      if (parts[0] && (match = parts[0].match(/wc-(.+)/))) {
-        flags[match[1]] = parts[1] || true;
-      }
+    location.search.slice(1).split("&").forEach(function(o) {
+      o = o.split("=");
+      o[0] && (flags[o[0]] = o[1] || true);
     });
     if (script) {
       for (var i = 0, a; a = script.attributes[i]; i++) {
         if (a.name !== "src") {
           flags[a.name] = a.value || true;
         }
       }
     }
     if (flags.log && flags.log.split) {
       var parts = flags.log.split(",");
@@ skipping 10 matching lines @@
     flags.shadow = false;
   } else {
     flags.shadow = flags.shadow || !HTMLElement.prototype.createShadowRoot;
   }
   if (flags.register) {
     window.CustomElements = window.CustomElements || {
       flags: {}
     };
     window.CustomElements.flags.register = flags.register;
   }
-  WebComponents.flags = flags;
-})();
+  scope.flags = flags;
+})(WebComponents);
 
 if (WebComponents.flags.shadow) {
   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 = {
@@ skipping 85 matching lines @@
       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) {
+    function getWrapperConstructor(node) {
       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);
+      registerInternal(nativePrototype, GeneratedWrapper, node);
       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 = {
@@ skipping 39 matching lines @@
       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);
-          }
+        if (allowMethod && typeof descriptor.value === "function") {
+          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);
@@ skipping 22 matching lines @@
     }
     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);
+      return impl.__wrapper8e3dd93a60__ || (impl.__wrapper8e3dd93a60__ = new (getWrapperConstructor(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) {
@@ skipping 29 matching lines @@
     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;
@@ skipping 787 matching lines @@
         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) {
@@ skipping 603 matching lines @@
       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) {
+    var isIe = /Trident|Edge/.test(navigator.userAgent);
+    var removeChildOriginalHelper = isIe ? 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, {
@@ skipping 489 matching lines @@
       }
     };
     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;
@@ skipping 255 matching lines @@
     }
     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 + ">";
+        s += ">";
+        if (voidElements[tagName]) 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:
@@ skipping 137 matching lines @@
     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);
+    [ "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;
@@ skipping 386 matching lines @@
       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 registerObject = scope.registerObject;
     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");
+    var SVGTitleElement = registerObject(svgTitleElement);
+    var SVGElement = Object.getPrototypeOf(SVGTitleElement.prototype).constructor;
     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"));
+    defineWrapGetter(SVGElement, "ownerSVGElement");
     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";
@@ skipping 85 matching lines @@
       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);
+    var DocumentFragment = registerObject(document.createDocumentFragment());
     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;
+    scope.wrappers.DocumentFragment = DocumentFragment;
   })(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();
+    var spaceCharRe = /[ \t\n\r\f]/;
     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);
@@ skipping 11 matching lines @@
       },
       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;
+      getElementById: function(id) {
+        if (spaceCharRe.test(id)) return null;
+        return this.querySelector('[id="' + id + '"]');
       }
     });
     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;
@@ skipping 567 matching lines @@
       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));
+        unsafeUnwrap(this).selectAllChildren(unwrapIfNeeded(node));
       },
       toString: function() {
         return unsafeUnwrap(this).toString();
       }
     };
     if (OriginalSelection.prototype.extend) {
       Selection.prototype.extend = function(node, offset) {
         unsafeUnwrap(this).extend(unwrapIfNeeded(node), offset);
       };
     }
@@ skipping 44 matching lines @@
       }
     };
     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);
+    [ "createComment", "createDocumentFragment", "createElement", "createElementNS", "createEvent", "createEventNS", "createRange", "createTextNode", "getElementById" ].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);
@@ skipping 103 matching lines @@
         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, "createDocument");
     wrapImplMethod(DOMImplementation, "createHTMLDocument");
     forwardImplMethod(DOMImplementation, "hasFeature");
     registerWrapper(window.DOMImplementation, DOMImplementation);
-    forwardMethodsToWrapper([ window.DOMImplementation ], [ "createDocument", "createDocumentType", "createHTMLDocument", "hasFeature" ]);
+    forwardMethodsToWrapper([ window.DOMImplementation ], [ "createDocumentType", "createDocument", "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;
@@ skipping 454 matching lines @@
         }
       },
       addCssToDocument: function(cssText, name) {
         if (cssText.match("@import")) {
           addOwnSheet(cssText, name);
         } else {
           addCssToDocument(cssText);
         }
       }
     };
-    var selectorRe = /([^{]*)({[\s\S]*?})/gim, cssCommentRe = /\/\*[^*]*\*+([^\/*][^*]*\*+)*\//gim, cssCommentNextSelectorRe = /\/\*\s*@polyfill ([^*]*\*+([^\/*][^*]*\*+)*\/)([^{]*?){/gim, cssContentNextSelectorRe = /polyfill-next-selector[^}]*content\:[\s]*?['"](.*?)['"][;\s]*}([^{]*?){/gim, cssCommentRuleRe = /\/\*\s@polyfill-rule([^*]*\*+([^\/*][^*]*\*+)*)\//gim, cssContentRuleRe = /(polyfill-rule)[^}]*(content\:[\s]*['"](.*?)['"])[;\s]*[^}]*}/gim, cssCommentUnscopedRuleRe = /\/\*\s@polyfill-unscoped-rule([^*]*\*+([^\/*][^*]*\*+)*)\//gim, cssContentUnscopedRuleRe = /(polyfill-unscoped-rule)[^}]*(content\:[\s]*['"](.*?)['"])[;\s]*[^}]*}/gim, cssPseudoRe = /::(x-[^\s{,(]*)/gim, cssPartRe = /::part\(([^)]*)\)/gim, polyfillHost = "-shadowcsshost", polyfillHostContext = "-shadowcsscontext", parenSuffix = ")(?:\\((" + "(?:\\([^)(]*\\)|[^)(]*)+?" + ")\\))?([^,{]*)";
+    var selectorRe = /([^{]*)({[\s\S]*?})/gim, cssCommentRe = /\/\*[^*]*\*+([^/*][^*]*\*+)*\//gim, cssCommentNextSelectorRe = /\/\*\s*@polyfill ([^*]*\*+([^/*][^*]*\*+)*\/)([^{]*?){/gim, cssContentNextSelectorRe = /polyfill-next-selector[^}]*content\:[\s]*?['"](.*?)['"][;\s]*}([^{]*?){/gim, cssCommentRuleRe = /\/\*\s@polyfill-rule([^*]*\*+([^/*][^*]*\*+)*)\//gim, cssContentRuleRe = /(polyfill-rule)[^}]*(content\:[\s]*['"](.*?)['"])[;\s]*[^}]*}/gim, cssCommentUnscopedRuleRe = /\/\*\s@polyfill-unscoped-rule([^*]*\*+([^/*][^*]*\*+)*)\//gim, cssContentUnscopedRuleRe = /(polyfill-unscoped-rule)[^}]*(content\:[\s]*['"](.*?)['"])[;\s]*[^}]*}/gim, cssPseudoRe = /::(x-[^\s{,(]*)/gim, cssPartRe = /::part\(([^)]*)\)/gim, polyfillHost = "-shadowcsshost", polyfillHostContext = "-shadowcsscontext", parenSuffix = ")(?:\\((" + "(?:\\([^)(]*\\)|[^)(]*)+?" + ")\\))?([^,{]*)";
     var cssColonHostRe = new RegExp("(" + polyfillHost + parenSuffix, "gim"), cssColonHostContextRe = new RegExp("(" + polyfillHostContext + parenSuffix, "gim"), selectorReSuffix = "([>\\s~+[.,{:][\\s\\S]*)?$", colonHostRe = /\:host/gim, colonHostContextRe = /\:host-context/gim, polyfillHostNoCombinator = polyfillHost + "-no-combinator", polyfillHostRe = new RegExp(polyfillHost, "gim"), polyfillHostContextRe = new RegExp(polyfillHostContext, "gim"), shadowDOMSelectorsRe = [ />>>/g, /::shadow/g, /::content/g, /\/deep\//g, /\/shadow\//g, /\/shadow-deep\//g, /\^\^/g, /\^/g ];
     function stylesToCssText(styles, preserveComments) {
       var cssText = "";
       Array.prototype.forEach.call(styles, function(s) {
         cssText += s.textContent + "\n\n";
       });
       if (!preserveComments) {
         cssText = cssText.replace(cssCommentRe, "");
       }
       return cssText;
@@ skipping 254 matching lines @@
         } else if (EOF == c) {
           break loop;
         } else {
           err("Code point not allowed in scheme: " + c);
           break loop;
         }
         break;
 
        case "scheme data":
         if ("?" == c) {
-          this._query = "?";
+          query = "?";
           state = "query";
         } else if ("#" == c) {
           this._fragment = "#";
           state = "fragment";
         } else {
           if (EOF != c && "     " != c && "\n" != c && "\r" != c) {
             this._schemeData += percentEscape(c);
           }
         }
         break;
@@ skipping 19 matching lines @@
         break;
 
        case "relative":
         this._isRelative = true;
         if ("file" != this._scheme) this._scheme = base._scheme;
         if (EOF == c) {
           this._host = base._host;
           this._port = base._port;
           this._path = base._path.slice();
           this._query = base._query;
-          this._username = base._username;
-          this._password = base._password;
           break loop;
         } else if ("/" == c || "\\" == c) {
           if ("\\" == c) err("\\ is an invalid code point.");
           state = "relative slash";
         } else if ("?" == c) {
           this._host = base._host;
           this._port = base._port;
           this._path = base._path.slice();
           this._query = "?";
-          this._username = base._username;
-          this._password = base._password;
           state = "query";
         } else if ("#" == c) {
           this._host = base._host;
           this._port = base._port;
           this._path = base._path.slice();
           this._query = base._query;
           this._fragment = "#";
-          this._username = base._username;
-          this._password = base._password;
           state = "fragment";
         } else {
           var nextC = input[cursor + 1];
           var nextNextC = input[cursor + 2];
           if ("file" != this._scheme || !ALPHA.test(c) || nextC != ":" && nextC != "|" || EOF != nextNextC && "/" != nextNextC && "\\" != nextNextC && "?" != nextNextC && "#" != nextNextC) {
             this._host = base._host;
             this._port = base._port;
-            this._username = base._username;
-            this._password = base._password;
             this._path = base._path.slice();
             this._path.pop();
           }
           state = "relative path";
           continue;
         }
         break;
 
        case "relative slash":
         if ("/" == c || "\\" == c) {
           if ("\\" == c) {
             err("\\ is an invalid code point.");
           }
           if ("file" == this._scheme) {
             state = "file host";
           } else {
             state = "authority ignore slashes";
           }
         } else {
           if ("file" != this._scheme) {
             this._host = base._host;
             this._port = base._port;
-            this._username = base._username;
-            this._password = base._password;
           }
           state = "relative path";
           continue;
         }
         break;
 
        case "authority first slash":
         if ("/" == c) {
           state = "authority second slash";
         } else {
@@ skipping 295 matching lines @@
   var OriginalURL = scope.URL;
   if (OriginalURL) {
     jURL.createObjectURL = function(blob) {
       return OriginalURL.createObjectURL.apply(OriginalURL, arguments);
     };
     jURL.revokeObjectURL = function(url) {
       OriginalURL.revokeObjectURL(url);
     };
   }
   scope.URL = jURL;
-})(self);
+})(this);
 
 (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) {
@@ skipping 275 matching lines @@
         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);
+  if (!global.MutationObserver) global.MutationObserver = JsMutationObserver;
+})(this);
 
 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;
+    return hasShadowDOMPolyfill ? 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);
+      var script = 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);
+  var isIE = /Trident|Edge/.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;
@@ skipping 33 matching lines @@
       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();
     }
@@ skipping 35 matching lines @@
     (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();
+    HTMLImports.ready = true;
+    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);
+})(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);
+})(HTMLImports);
 
-window.HTMLImports.addModule(function(scope) {
+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) {
+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 locationHeader = request.getResponseHeader("Location");
           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);
+          if (locationHeader) {
+            var redirectedUrl = locationHeader.substr(0, 1) === "/" ? location.origin + locationHeader : locationHeader;
           }
           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) {
+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 = {
@@ skipping 72 matching lines @@
     },
     checkDone: function() {
       if (!this.inflight) {
         this.oncomplete();
       }
     }
   };
   scope.Loader = Loader;
 });
 
-window.HTMLImports.addModule(function(scope) {
+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);
         }
@@ skipping 12 matching lines @@
     observe: function(root) {
       this.mo.observe(root, {
         childList: true,
         subtree: true
       });
     }
   };
   scope.Observer = Observer;
 });
 
-window.HTMLImports.addModule(function(scope) {
+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(","),
+    importsSelectors: [ IMPORT_SELECTOR, "link[rel=stylesheet]", "style", "script:not([type])", 'script[type="text/javascript"]' ].join(","),
     map: {
       link: "parseLink",
       script: "parseScript",
       style: "parseStyle"
     },
     dynamicElements: [],
     parseNext: function() {
       var next = this.nextToParse();
       if (next) {
         this.parse(next);
@@ skipping 30 matching lines @@
       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 (HTMLImports.__importsParsingHook) {
+        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 {
@@ skipping 40 matching lines @@
       }
       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
-            }));
-          });
+          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);
-        }
+        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++) {
+        for (var i = 0, l = nodes.length, p = 0, n; i < l && (n = nodes[i]); i++) {
           if (!this.isParsed(n)) {
             if (this.hasResource(n)) {
-              return nodeIsImport(n) ? this.nextToParseInDoc(n.__doc, n) : n;
+              return nodeIsImport(n) ? this.nextToParseInDoc(n.import, 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) {
+      if (nodeIsImport(node) && node.import === undefined) {
         return false;
       }
       return true;
     }
   };
   function nodeIsImport(elt) {
     return elt.localName === "link" && elt.rel === IMPORT_LINK_TYPE;
   }
   function generateScriptDataUrl(script) {
     var scriptContent = generateScriptContent(script);
@@ skipping 13 matching lines @@
   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) {
+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,
@@ skipping 19 matching lines @@
       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;
+        elt.import = doc;
       }
       parser.parseNext();
     },
     bootDocument: function(doc) {
       this.loadSubtree(doc);
       this.observer.observe(doc);
       parser.parseNext();
     },
     loadedAll: function() {
       parser.parseNext();
@@ skipping 38 matching lines @@
       },
       configurable: true
     };
     Object.defineProperty(document, "baseURI", baseURIDescriptor);
     Object.defineProperty(rootDocument, "baseURI", baseURIDescriptor);
   }
   scope.importer = importer;
   scope.importLoader = importLoader;
 });
 
-window.HTMLImports.addModule(function(scope) {
+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);
         }
@@ skipping 16 matching lines @@
   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;
   }
+  if (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;
+  }
   initializeModules();
   var rootDocument = scope.rootDocument;
   function bootstrap() {
-    window.HTMLImports.importer.bootDocument(rootDocument);
+    HTMLImports.importer.bootDocument(rootDocument);
   }
   if (document.readyState === "complete" || document.readyState === "interactive" && !window.attachEvent) {
     bootstrap();
   } else {
     document.addEventListener("DOMContentLoaded", bootstrap);
   }
-})(window.HTMLImports);
+})(HTMLImports);
 
 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);
+  scope.useNative = !flags.register && scope.hasNative && !window.ShadowDOMPolyfill && (!window.HTMLImports || HTMLImports.useNative);
+})(CustomElements);
 
-window.CustomElements.addModule(function(scope) {
-  var IMPORT_LINK_TYPE = window.HTMLImports ? window.HTMLImports.IMPORT_LINK_TYPE : "none";
+CustomElements.addModule(function(scope) {
+  var IMPORT_LINK_TYPE = window.HTMLImports ? 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) {
@@ skipping 16 matching lines @@
     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);
+    doc = 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) {
+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 addedNode(node) {
+    return added(node) || addedSubtree(node);
   }
-  function added(node, isAttached) {
-    if (scope.upgrade(node, isAttached)) {
+  function added(node) {
+    if (scope.upgrade(node)) {
       return true;
     }
-    if (isAttached) {
-      attached(node);
-    }
+    attached(node);
   }
-  function addedSubtree(node, isAttached) {
+  function addedSubtree(node) {
     forSubtree(node, function(e) {
-      if (added(e, isAttached)) {
+      if (added(e)) {
         return true;
       }
     });
   }
-  var hasThrottledAttached = window.MutationObserver._isPolyfilled && flags["throttle-attached"];
-  scope.hasPolyfillMutations = hasThrottledAttached;
-  scope.hasThrottledAttached = hasThrottledAttached;
+  function attachedNode(node) {
+    attached(node);
+    if (inDocument(node)) {
+      forSubtree(node, function(e) {
+        attached(e);
+      });
+    }
+  }
+  var hasPolyfillMutations = !window.MutationObserver || window.MutationObserver === window.JsMutationObserver;
+  scope.hasPolyfillMutations = hasPolyfillMutations;
   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) {
+    if (hasPolyfillMutations) {
       deferMutation(function() {
         _attached(element);
       });
     } else {
       _attached(element);
     }
   }
   function _attached(element) {
-    if (element.__upgraded__ && !element.__attached) {
-      element.__attached = true;
-      if (element.attachedCallback) {
-        element.attachedCallback();
+    if (element.__upgraded__ && (element.attachedCallback || element.detachedCallback)) {
+      if (!element.__attached && inDocument(element)) {
+        element.__attached = true;
+        if (element.attachedCallback) {
+          element.attachedCallback();
+        }
       }
     }
   }
   function detachedNode(node) {
     detached(node);
     forSubtree(node, function(e) {
       detached(e);
     });
   }
   function detached(element) {
-    if (hasThrottledAttached) {
+    if (hasPolyfillMutations) {
       deferMutation(function() {
         _detached(element);
       });
     } else {
       _detached(element);
     }
   }
   function _detached(element) {
-    if (element.__upgraded__ && element.__attached) {
-      element.__attached = false;
-      if (element.detachedCallback) {
-        element.detachedCallback();
+    if (element.__upgraded__ && (element.attachedCallback || element.detachedCallback)) {
+      if (element.__attached && !inDocument(element)) {
+        element.__attached = false;
+        if (element.detachedCallback) {
+          element.detachedCallback();
+        }
       }
     }
   }
   function inDocument(element) {
     var p = element;
-    var doc = window.wrap(document);
+    var doc = 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) {
+  function handler(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);
+          addedNode(n);
         });
         forEach(mx.removedNodes, function(n) {
           if (!n.localName) {
             return;
           }
           detachedNode(n);
         });
       }
     });
     flags.dom && console.groupEnd();
   }
   function takeRecords(node) {
-    node = window.wrap(node);
+    node = wrap(node);
     if (!node) {
-      node = window.wrap(document);
+      node = wrap(document);
     }
     while (node.parentNode) {
       node = node.parentNode;
     }
     var observer = node.__observer;
     if (observer) {
-      handler(node, observer.takeRecords());
+      handler(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));
+    var observer = new MutationObserver(handler);
     observer.observe(inRoot, {
       childList: true,
       subtree: true
     });
     inRoot.__observer = observer;
   }
   function upgradeDocument(doc) {
-    doc = window.wrap(doc);
+    doc = wrap(doc);
     flags.dom && console.group("upgradeDocument: ", doc.baseURI.split("/").pop());
-    var isMainDocument = doc === window.wrap(document);
-    addedNode(doc, isMainDocument);
+    addedNode(doc);
     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);
+      CustomElements.watchShadow(this);
       return root;
     };
   }
   scope.watchShadow = watchShadow;
   scope.upgradeDocumentTree = upgradeDocumentTree;
-  scope.upgradeDocument = upgradeDocument;
   scope.upgradeSubtree = addedSubtree;
   scope.upgradeAll = addedNode;
-  scope.attached = attached;
+  scope.attachedNode = attachedNode;
   scope.takeRecords = takeRecords;
 });
 
-window.CustomElements.addModule(function(scope) {
+CustomElements.addModule(function(scope) {
   var flags = scope.flags;
-  function upgrade(node, isAttached) {
-    if (node.localName === "template") {
-      if (window.HTMLTemplateElement && HTMLTemplateElement.decorate) {
-        HTMLTemplateElement.decorate(node);
-      }
-    }
+  function upgrade(node) {
     if (!node.__upgraded__ && node.nodeType === Node.ELEMENT_NODE) {
       var is = node.getAttribute("is");
-      var definition = scope.getRegisteredDefinition(node.localName) || scope.getRegisteredDefinition(is);
+      var definition = scope.getRegisteredDefinition(is || node.localName);
       if (definition) {
-        if (is && definition.tag == node.localName || !is && !definition.extends) {
-          return upgradeWithDefinition(node, definition, isAttached);
+        if (is && definition.tag == node.localName) {
+          return upgradeWithDefinition(node, definition);
+        } else if (!is && !definition.extends) {
+          return upgradeWithDefinition(node, definition);
         }
       }
     }
   }
-  function upgradeWithDefinition(element, definition, isAttached) {
+  function upgradeWithDefinition(element, definition) {
     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);
+    scope.attachedNode(element);
+    scope.upgradeSubtree(element);
     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;
     }
@@ skipping 15 matching lines @@
   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;
+CustomElements.addModule(function(scope) {
+  var isIE11OrOlder = scope.isIE11OrOlder;
   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();
-    if (definition.extends) {
-      definition.extends = definition.extends.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) {
@@ skipping 47 matching lines @@
     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 expectedPrototype = Object.getPrototypeOf(inst);
+        if (expectedPrototype === definition.prototype) {
+          nativePrototype = expectedPrototype;
+        }
       }
       var proto = definition.prototype, ancestor;
-      var foundPrototype = false;
-      while (proto) {
-        if (proto == nativePrototype) {
-          foundPrototype = true;
-        }
+      while (proto && proto !== nativePrototype) {
         ancestor = Object.getPrototypeOf(proto);
-        if (ancestor) {
-          proto.__proto__ = 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 (isIE11OrOlder) {
+    (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;
+  var isIE11OrOlder = /Trident/.test(navigator.userAgent);
   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;
+      window.wrap = ShadowDOMPolyfill.wrapIfNeeded;
+      window.unwrap = 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(wrap(document));
+    if (window.HTMLImports) {
+      HTMLImports.__importsParsingHook = function(elt) {
+        upgradeDocumentTree(wrap(elt.import));
+      };
+    }
+    CustomElements.ready = true;
+    setTimeout(function() {
+      CustomElements.readyTime = Date.now();
+      if (window.HTMLImports) {
+        CustomElements.elapsed = CustomElements.readyTime - HTMLImports.readyTime;
       }
+      document.dispatchEvent(new CustomEvent("WebComponentsReady", {
+        bubbles: true
+      }));
+    });
+  }
+  if (isIE11OrOlder && 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;
     };
-  }
-  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
-        }));
-      });
-    });
+    window.CustomEvent.prototype = window.Event.prototype;
   }
   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";
+    var loadEvent = window.HTMLImports && !HTMLImports.ready ? "HTMLImportsLoaded" : "DOMContentLoaded";
     window.addEventListener(loadEvent, bootstrap);
   }
+  scope.isIE11OrOlder = isIE11OrOlder;
 })(window.CustomElements);
 
 (function(scope) {
   if (!Function.prototype.bind) {
     Function.prototype.bind = function(scope) {
       var self = this;
       var args = Array.prototype.slice.call(arguments, 1);
       return function() {
         var args2 = args.slice();
         args2.push.apply(args2, arguments);
         return self.apply(scope, args2);
       };
     };
   }
 })(window.WebComponents);
 
 (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 elementDeclarations = [];
+  var polymerStub = function(name, dictionary) {
+    if (typeof name !== "string" && arguments.length === 1) {
+      Array.prototype.push.call(arguments, document._currentScript);
+    }
+    elementDeclarations.push(arguments);
+  };
+  window.Polymer = polymerStub;
+  scope.consumeDeclarations = function(callback) {
+    scope.consumeDeclarations = function() {
+      throw "Possible attempt to load Polymer twice";
+    };
+    if (callback) {
+      callback(elementDeclarations);
+    }
+    elementDeclarations = null;
+  };
+  function installPolymerWarning() {
+    if (window.Polymer === polymerStub) {
+      window.Polymer = function() {
+        throw new Error("You tried to use polymer without loading it first. To " + 'load polymer, <link rel="import" href="' + 'components/polymer/polymer.html">');
+      };
+    }
+  }
+  if (HTMLImports.useNative) {
+    installPolymerWarning();
+  } else {
+    addEventListener("DOMContentLoaded", installPolymerWarning);
+  }
+})(window.WebComponents);
+
+(function(scope) {
   var style = document.createElement("style");
   style.textContent = "" + "body {" + "transition: opacity ease-in 0.2s;" + " } \n" + "body[unresolved] {" + "opacity: 0; display: block; overflow: hidden; position: relative;" + " } \n";
   var head = document.querySelector("head");
   head.insertBefore(style, head.firstChild);
 })(window.WebComponents);
 
 (function(scope) {
   window.Platform = scope;
 })(window.WebComponents);