IsEmpty) {   std::unique_ptr<LogDnsClient::AuditProofQuery> query;   ASSERT_THAT(QueryAuditProof("", kLeafHashes[0], kTreeSizes[0], &query),               IsError(net::ERR_INVALID_ARGUMENT)); }  TEST_P(LogDnsClientTest, QueryAuditProofReportsInvalidArgIfLeafHashIs