Revert "third_party/protobuf: Update to HEAD (83d681ee2c)"

third_party/protobuf/js/debug.js

Index: third_party/protobuf/js/debug.js
diff --git a/third_party/protobuf/js/debug.js b/third_party/protobuf/js/debug.js
index 46b24853150af52ee70024f18beeb0680398fcf0..3701a0957ea05863dee4f547545cc9da9b8b529c 100644
--- a/third_party/protobuf/js/debug.js
+++ b/third_party/protobuf/js/debug.js
@@ -94,9 +94,8 @@ jspb.debug.dump_ = function(thing) {
     var match = /^get([A-Z]\w*)/.exec(name);
     if (match && name != 'getExtension' &&
         name != 'getJsPbMessageId') {
-      var has = 'has' + match[1];
-      if (!thing[has] || thing[has]()) {
-        var val = thing[name]();
+      var val = thing[name]();
+      if (val != null) {
         object[jspb.debug.formatFieldName_(match[1])] = jspb.debug.dump_(val);
       }
     }