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third_party/polymer/components/webcomponentsjs/MutationObserver.js

Index: third_party/polymer/components/webcomponentsjs/MutationObserver.js
diff --git a/third_party/polymer/components/webcomponentsjs/MutationObserver.js b/third_party/polymer/components/webcomponentsjs/MutationObserver.js
deleted file mode 100644
index e58713b6a8f19b2878f771ecc6f8e8a710f7fdee..0000000000000000000000000000000000000000
--- a/third_party/polymer/components/webcomponentsjs/MutationObserver.js
+++ /dev/null
@@ -1,350 +0,0 @@
-/**
- * @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
-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);