Fix Polymer licensing issues

third_party/web-animations-js/sources/src/animation-constructor.js

-// Copyright 2014 Google Inc. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-//     You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-//     See the License for the specific language governing permissions and
-// limitations under the License.
-
-(function(shared, scope, testing) {
-
-  function groupChildDuration(node) {
-    return node._timing.delay + node.activeDuration + node._timing.endDelay;
-  };
-
-  function KeyframeEffect(effect) {
-    this._frames = shared.normalizeKeyframes(effect);
-  }
-
-  KeyframeEffect.prototype = {
-    getFrames: function() { return this._frames; }
-  };
-
-  scope.Animation = function(target, effect, timingInput) {
-    this.target = target;
-
-    // TODO: Store a clone, not the same instance.
-    this._timingInput = timingInput;
-    this._timing = shared.normalizeTimingInput(timingInput);
-
-    // TODO: Make modifications to timing update the underlying player
-    this.timing = shared.makeTiming(timingInput);
-    // TODO: Make this a live object - will need to separate normalization of
-    // keyframes into a shared module.
-    if (typeof effect == 'function')
-      this.effect = effect;
-    else
-      this.effect = new KeyframeEffect(effect);
-    this._effect = effect;
-    this.activeDuration = shared.calculateActiveDuration(this._timing);
-    return this;
-  };
-
-  var originalElementAnimate = Element.prototype.animate;
-  Element.prototype.animate = function(effect, timing) {
-    return scope.timeline.play(new scope.Animation(this, effect, timing));
-  };
-
-  var nullTarget = document.createElementNS('http://www.w3.org/1999/xhtml', 'div');
-  scope.newUnderlyingPlayerForAnimation = function(animation) {
-    var target = animation.target || nullTarget;
-    var effect = animation._effect;
-    if (typeof effect == 'function') {
-      effect = [];
-    }
-    return originalElementAnimate.apply(target, [effect, animation._timingInput]);
-  };
-
-  scope.bindPlayerForAnimation = function(player) {
-    if (player.source && typeof player.source.effect == 'function') {
-      scope.bindPlayerForCustomEffect(player);
-    }
-  };
-
-  var pendingGroups = [];
-  scope.awaitStartTime = function(groupPlayer) {
-    if (groupPlayer.startTime !== null || !groupPlayer._isGroup)
-      return;
-    if (pendingGroups.length == 0) {
-      requestAnimationFrame(updatePendingGroups);
-    }
-    pendingGroups.push(groupPlayer);
-  };
-  function updatePendingGroups() {
-    var updated = false;
-    while (pendingGroups.length) {
-      pendingGroups.shift()._updateChildren();
-      updated = true;
-    }
-    return updated;
-  }
-  var originalGetComputedStyle = window.getComputedStyle;
-  Object.defineProperty(window, 'getComputedStyle', {
-    configurable: true,
-    enumerable: true,
-    value: function() {
-      var result = originalGetComputedStyle.apply(this, arguments);
-      if (updatePendingGroups())
-        result = originalGetComputedStyle.apply(this, arguments);
-      return result;
-    },
-  });
-
-  // TODO: Call into this less frequently.
-  scope.Player.prototype._updateChildren = function() {
-    if (this.paused || !this.source || !this._isGroup)
-      return;
-    var offset = this.source._timing.delay;
-    for (var i = 0; i < this.source.children.length; i++) {
-      var child = this.source.children[i];
-      var childPlayer;
-
-      if (i >= this._childPlayers.length) {
-        childPlayer = window.document.timeline.play(child);
-        this._childPlayers.push(childPlayer);
-      } else {
-        childPlayer = this._childPlayers[i];
-      }
-      child.player = this.source.player;
-
-      if (childPlayer.startTime != this.startTime + offset) {
-        if (this.startTime === null) {
-          childPlayer.currentTime = this.source.player.currentTime - offset;
-          childPlayer._startTime = null;
-        } else {
-          childPlayer.startTime = this.startTime + offset;
-        }
-        childPlayer._updateChildren();
-      }
-
-      if (this.playbackRate == -1 && this.currentTime < offset && childPlayer.currentTime !== -1) {
-        childPlayer.currentTime = -1;
-      }
-
-      if (this.source instanceof window.AnimationSequence)
-        offset += groupChildDuration(child);
-    }
-  };
-
-  window.Animation = scope.Animation;
-  window.Element.prototype.getAnimationPlayers = function() {
-    return document.timeline.getAnimationPlayers().filter(function(player) {
-      return player.source !== null && player.source.target == this;
-    }.bind(this));
-  };
-
-  scope.groupChildDuration = groupChildDuration;
-
-}(webAnimationsShared, webAnimationsNext, webAnimationsTesting));