Update third_party/protobuf to protobuf-v3.0.0-beta-3

third_party/protobuf/js/debug.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 50 matching lines @@
   goog.asserts.assert(object['getExtension'],
       'Only unobfuscated and unoptimized compilation modes supported.');
   return /** @type {Object} */ (jspb.debug.dump_(message));
 };
 
 
 /**
  * Recursively introspects a message and the values its getters return to
  * make a best effort in creating a human readable representation of the
  * message.
- * @param {*} thing A jspb.Message, Array or primitive type to dump.
+ * @param {?} thing A jspb.Message, Array or primitive type to dump.
  * @return {*}
  * @private
  */
 jspb.debug.dump_ = function(thing) {
   var type = goog.typeOf(thing);
   if (type == 'number' || type == 'string' || type == 'boolean' ||
       type == 'null' || type == 'undefined') {
     return thing;
   }
   if (type == 'array') {
@@ skipping 49 matching lines @@
  * @param {string} name Name of the field.
  * @return {string}
  * @private
  */
 jspb.debug.formatFieldName_ = function(name) {
   // Name may be in TitleCase.
   return name.replace(/^[A-Z]/, function(c) {
     return c.toLowerCase();
   });
 };