Fix visibility

Author: logachev

java-bigquery-jdbc/src/main/java/com/google/cloud/bigquery/jdbc/BigQueryBaseResultSet.java

@@ -16,6 +16,7 @@
 
 package com.google.cloud.bigquery.jdbc;
 
+import com.google.api.core.InternalApi;
 import com.google.cloud.bigquery.BigQuery;
 import com.google.cloud.bigquery.BigQueryError;
 import com.google.cloud.bigquery.BigQueryException;
@@ -115,7 +116,8 @@ public QueryStatistics getQueryStatistics() {
     return queryStatistics;
   }
 
-  protected void setQueryStatistics(QueryStatistics queryStatistics) {
+  @InternalApi 
+  public void setQueryStatistics(QueryStatistics queryStatistics) {
     this.queryStatistics = queryStatistics;
   }