RemoveEmptySubnodes  169 chrome/browser/history/query_parser.cc   void RemoveEmptySubnodes();
RemoveEmptySubnodes  207 chrome/browser/history/query_parser.cc     list_node->RemoveEmptySubnodes();
RemoveEmptySubnodes  449 chrome/browser/history/query_parser.cc   root->RemoveEmptySubnodes();