Fix Polymer licensing issues

third_party/web-animations-js/sources/src/color-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) {
-
-  var canvas = document.createElementNS('http://www.w3.org/1999/xhtml', 'canvas');
-  canvas.width = canvas.height = 1;
-  var context = canvas.getContext('2d');
-
-  function parseColor(string) {
-    string = string.trim();
-    // The context ignores invalid colors
-    context.fillStyle = '#000';
-    context.fillStyle = string;
-    var contextSerializedFillStyle = context.fillStyle;
-    context.fillStyle = '#fff';
-    context.fillStyle = string;
-    if (contextSerializedFillStyle != context.fillStyle)
-      return;
-    context.fillRect(0, 0, 1, 1);
-    var pixelColor = context.getImageData(0, 0, 1, 1).data;
-    context.clearRect(0, 0, 1, 1);
-    var alpha = pixelColor[3] / 255;
-    return [pixelColor[0] * alpha, pixelColor[1] * alpha, pixelColor[2] * alpha, alpha];
-  }
-
-  function mergeColors(left, right) {
-    return [left, right, function(x) {
-      function clamp(v) {
-        return Math.max(0, Math.min(255, v));
-      }
-      if (x[3]) {
-        for (var i = 0; i < 3; i++)
-          x[i] = Math.round(clamp(x[i] / x[3]));
-      }
-      x[3] = scope.numberToString(scope.clamp(0, 1, x[3]));
-      return 'rgba(' + x.join(',') + ')';
-    }];
-  }
-
-  scope.addPropertiesHandler(parseColor, mergeColors,
-      ['background-color', 'border-bottom-color', 'border-left-color', 'border-right-color',
-       'border-top-color', 'color', 'outline-color', 'text-decoration-color']);
-  scope.consumeColor = scope.consumeParenthesised.bind(null, parseColor);
-  scope.mergeColors = mergeColors;
-
-  if (WEB_ANIMATIONS_TESTING) {
-    testing.parseColor = parseColor;
-  }
-
-})(webAnimations1, webAnimationsTesting);