[third_party] add polymer 1.2.3

polymer_1.2.3/bower_components/promise-polyfill/Promise.js

 function MakePromise (asap) {
   function Promise(fn) {
                 if (typeof this !== 'object' || typeof fn !== 'function') throw new TypeError();
                 this._state = null;
                 this._value = null;
                 this._deferreds = []
 
                 doResolve(fn, resolve.bind(this), reject.bind(this));
         }
 
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         };
 
         
   return Promise;
 }
 
 if (typeof module !== 'undefined') {
   module.exports = MakePromise;
 }