diff --git a/src/google/protobuf/compiler/java/message_builder.cc b/src/google/protobuf/compiler/java/message_builder.cc
index dd2a152..945cf9d 100644
--- a/src/google/protobuf/compiler/java/message_builder.cc
+++ b/src/google/protobuf/compiler/java/message_builder.cc
@@ -418,79 +418,6 @@
 
   GenerateBuildPartial(printer);
 
-  if (context_->options().opensource_runtime) {
-    // Override methods declared in GeneratedMessage to return the concrete
-    // generated type so callsites won't depend on GeneratedMessage. This
-    // is needed to keep binary compatibility when we change generated code
-    // to subclass a different GeneratedMessage class (e.g., in v3.0.0 release
-    // we changed all generated code to subclass GeneratedMessageV3).
-    printer->Print(
-        "@java.lang.Override\n"
-        "public Builder clone() {\n"
-        "  return super.clone();\n"
-        "}\n"
-        "@java.lang.Override\n"
-        "public Builder setField(\n"
-        "    com.google.protobuf.Descriptors.FieldDescriptor field,\n"
-        "    java.lang.Object value) {\n"
-        "  return super.setField(field, value);\n"
-        "}\n"
-        "@java.lang.Override\n"
-        "public Builder clearField(\n"
-        "    com.google.protobuf.Descriptors.FieldDescriptor field) {\n"
-        "  return super.clearField(field);\n"
-        "}\n"
-        "@java.lang.Override\n"
-        "public Builder clearOneof(\n"
-        "    com.google.protobuf.Descriptors.OneofDescriptor oneof) {\n"
-        "  return super.clearOneof(oneof);\n"
-        "}\n"
-        "@java.lang.Override\n"
-        "public Builder setRepeatedField(\n"
-        "    com.google.protobuf.Descriptors.FieldDescriptor field,\n"
-        "    int index, java.lang.Object value) {\n"
-        "  return super.setRepeatedField(field, index, value);\n"
-        "}\n"
-        "@java.lang.Override\n"
-        "public Builder addRepeatedField(\n"
-        "    com.google.protobuf.Descriptors.FieldDescriptor field,\n"
-        "    java.lang.Object value) {\n"
-        "  return super.addRepeatedField(field, value);\n"
-        "}\n");
-
-    if (descriptor_->extension_range_count() > 0) {
-      printer->Print(
-          "@java.lang.Override\n"
-          "public <Type> Builder setExtension(\n"
-          "    com.google.protobuf.GeneratedMessage.GeneratedExtension<\n"
-          "        $classname$, Type> extension,\n"
-          "    Type value) {\n"
-          "  return super.setExtension(extension, value);\n"
-          "}\n"
-          "@java.lang.Override\n"
-          "public <Type> Builder setExtension(\n"
-          "    com.google.protobuf.GeneratedMessage.GeneratedExtension<\n"
-          "        $classname$, java.util.List<Type>> extension,\n"
-          "    int index, Type value) {\n"
-          "  return super.setExtension(extension, index, value);\n"
-          "}\n"
-          "@java.lang.Override\n"
-          "public <Type> Builder addExtension(\n"
-          "    com.google.protobuf.GeneratedMessage.GeneratedExtension<\n"
-          "        $classname$, java.util.List<Type>> extension,\n"
-          "    Type value) {\n"
-          "  return super.addExtension(extension, value);\n"
-          "}\n"
-          "@java.lang.Override\n"
-          "public <Type> Builder clearExtension(\n"
-          "    com.google.protobuf.GeneratedMessage.GeneratedExtension<\n"
-          "        $classname$, ?> extension) {\n"
-          "  return super.clearExtension(extension);\n"
-          "}\n",
-          "classname", name_resolver_->GetImmutableClassName(descriptor_));
-    }
-  }
-
   // -----------------------------------------------------------------
 
   if (context_->HasGeneratedMethods(descriptor_)) {