Fix Polymer licensing issues

third_party/web-animations-js/sources/src/box-handler.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(scope, testing) {
-  function consumeLengthPercentOrAuto(string) {
-    return scope.consumeLengthOrPercent(string) || scope.consumeToken(/^auto/, string);
-  }
-  function parseBox(string) {
-    var result = scope.consumeList([
-      scope.ignore(scope.consumeToken.bind(null, /^rect/)),
-      scope.ignore(scope.consumeToken.bind(null, /^\(/)),
-      scope.consumeRepeated.bind(null, consumeLengthPercentOrAuto, /^,/),
-      scope.ignore(scope.consumeToken.bind(null, /^\)/)),
-    ], string);
-    if (result && result[0].length == 4) {
-      return result[0];
-    }
-  }
-
-  function mergeComponent(left, right) {
-    if (left == 'auto' || right == 'auto') {
-      return [true, false, function(t) {
-        var result = t ? left : right;
-        if (result == 'auto') {
-          return 'auto';
-        }
-        // FIXME: There's probably a better way to turn a dimension back into a string.
-        var merged = scope.mergeDimensions(result, result);
-        return merged[2](merged[0]);
-      }];
-    }
-    return scope.mergeDimensions(left, right);
-  }
-
-  function wrap(result) {
-    return 'rect(' + result + ')';
-  }
-
-  var mergeBoxes = scope.mergeWrappedNestedRepeated.bind(null, wrap, mergeComponent, ', ');
-
-  scope.parseBox = parseBox;
-  scope.mergeBoxes = mergeBoxes;
-
-  scope.addPropertiesHandler(parseBox, mergeBoxes, ['clip']);
-
-})(webAnimations1, webAnimationsTesting);