1 files changed, 9 insertions, 0 deletions
diff --git a/src/main/java/com/google/devtools/build/lib/skyframe/serialization/MessageLiteCodec.java b/src/main/java/com/google/devtools/build/lib/skyframe/serialization/MessageLiteCodec.java
index f5bba6da32..49b786c04a 100644
--- a/src/main/java/com/google/devtools/build/lib/skyframe/serialization/MessageLiteCodec.java
+++ b/src/main/java/com/google/devtools/build/lib/skyframe/serialization/MessageLiteCodec.java
@@ -14,11 +14,13 @@
 
 package com.google.devtools.build.lib.skyframe.serialization;
 
+import com.google.common.collect.ImmutableList;
 import com.google.protobuf.CodedInputStream;
 import com.google.protobuf.CodedOutputStream;
 import com.google.protobuf.ExtensionRegistryLite;
 import com.google.protobuf.InvalidProtocolBufferException;
 import com.google.protobuf.MessageLite;
+import com.google.protobuf.UnknownFieldSet;
 import java.io.IOException;
 import java.util.function.Supplier;
 
@@ -65,4 +67,11 @@ public class MessageLiteCodec implements ObjectCodec<MessageLite> {
       codedIn.enableAliasing(true);
     }
   }
+
+  private static class MessageLiteCodecRegisterer implements CodecRegisterer<MessageLiteCodec> {
+    @Override
+    public ImmutableList<MessageLiteCodec> getCodecsToRegister() {
+      return ImmutableList.of(new MessageLiteCodec(UnknownFieldSet::newBuilder));
+    }
+  }
 }