Fix Polymer licensing issues

third_party/web-animations-js/sources/src/group-constructors.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 constructor(children, timingInput) {
-    this.children = children || [];
-    this._timing = shared.normalizeTimingInput(timingInput, true);
-    this.timing = shared.makeTiming(timingInput, true);
-
-    if (this._timing.duration === 'auto')
-      this._timing.duration = this.activeDuration;
-  }
-
-  window.AnimationSequence = function() {
-    constructor.apply(this, arguments);
-  };
-
-  window.AnimationGroup = function() {
-    constructor.apply(this, arguments);
-  };
-
-  window.AnimationSequence.prototype = {
-    get activeDuration() {
-      var total = 0;
-      this.children.forEach(function(child) {
-        total += scope.groupChildDuration(child);
-      });
-      return Math.max(total, 0);
-    }
-  };
-
-  window.AnimationGroup.prototype = {
-    get activeDuration() {
-      var max = 0;
-      this.children.forEach(function(child) {
-        max = Math.max(max, scope.groupChildDuration(child));
-      });
-      return max;
-    }
-  };
-
-  scope.newUnderlyingPlayerForGroup = function(group) {
-    var underlyingPlayer;
-    var ticker = function(tf) {
-      var player = underlyingPlayer._wrapper;
-      if (!player.source)
-        return;
-      if (tf == null) {
-        player._removePlayers();
-        return;
-      }
-      if (player.startTime === null)
-        return;
-
-      player._updateChildren();
-    };
-
-    underlyingPlayer = scope.timeline.play(new scope.Animation(null, ticker, group._timing));
-    return underlyingPlayer;
-  };
-
-  scope.bindPlayerForGroup = function(player) {
-    player._player._wrapper = player;
-    player._isGroup = true;
-    scope.awaitStartTime(player);
-    player._updateChildren();
-  };
-
-
-})(webAnimationsShared, webAnimationsNext, webAnimationsTesting);