third_party/protobuf: Update to HEAD (f52e188fe4)

third_party/protobuf/js/binary/constants.js

 // Protocol Buffers - Google's data interchange format
 // Copyright 2008 Google Inc.  All rights reserved.
 // https://developers.google.com/protocol-buffers/
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 // notice, this list of conditions and the following disclaimer.
@@ skipping 123 matching lines @@
 
 /**
  * A reader function initializes a message using data from a BinaryReader.
  * @typedef {function(!jspb.BinaryMessage, !jspb.BinaryReader):void}
  */
 jspb.ReaderFunction;
 
 
 /**
  * A writer function serializes a message to a BinaryWriter.
- * @typedef {!function(!jspb.Message, !jspb.BinaryWriter):void |
- *           !function(!jspb.ConstBinaryMessage, !jspb.BinaryWriter):void}
+ * @typedef {function((!jspb.Message|!jspb.ConstBinaryMessage),
+ *                    !jspb.BinaryWriter):void}
  */
 jspb.WriterFunction;
 
 
 /**
  * A pruner function removes default-valued fields and empty submessages from a
  * message and returns either the pruned message or null if the entire message
  * was pruned away.
  * @typedef {function(?jspb.BinaryMessage):?jspb.BinaryMessage}
  */
@@ skipping 195 matching lines @@
  * @const {number}
  */
 jspb.BinaryConstants.TWO_TO_64 = 18446744073709551616;
 
 
 /**
  * Eight-character string of zeros, used as the default 64-bit hash value.
  * @const {string}
  */
 jspb.BinaryConstants.ZERO_HASH = '\0\0\0\0\0\0\0\0';