Fix Polymer licensing issues

third_party/polymer/v1_0/components/promise-polyfill/Promise-Statics.js

-Promise.all = Promise.all || function () {
-  var args = Array.prototype.slice.call(arguments.length === 1 && Array.isArray(arguments[0]) ? arguments[0] : arguments);
-
-  return new Promise(function (resolve, reject) {
-    if (args.length === 0) return resolve([]);
-    var remaining = args.length;
-    function res(i, val) {
-      try {
-        if (val && (typeof val === 'object' || typeof val === 'function')) {
-          var then = val.then;
-          if (typeof then === 'function') {
-            then.call(val, function (val) { res(i, val) }, reject);
-            return;
-          }
-        }
-        args[i] = val;
-        if (--remaining === 0) {
-          resolve(args);
-        }
-      } catch (ex) {
-        reject(ex);
-      }
-    }
-    for (var i = 0; i < args.length; i++) {
-      res(i, args[i]);
-    }
-  });
-};
-
-Promise.race = Promise.race || function (values) {
-  return new Promise(function (resolve, reject) {
-    for(var i = 0, len = values.length; i < len; i++) {
-      values[i].then(resolve, reject);
-    }
-  });
-};
-