message: Fix missing () when constructing TextEncodingUtf8.
diff: var base64Impl = new Base64Secure();
  var compressionImpls = {};
  compressionImpls[MslConstants.CompressionAlgorithm.LZW] = new LzwCompression();
  - var textEncodingImpl = new TextEncodingUtf8;
  + var textEncodingImpl = new TextEncodingUtf8();
  // The properties.
  var props = {
  