Fix standalone QUICHE build

PiperOrigin-RevId: 600544769
diff --git a/quiche/common/platform/default/quiche_platform_impl/quiche_test_impl.h b/quiche/common/platform/default/quiche_platform_impl/quiche_test_impl.h
index 258b862..5b51304 100644
--- a/quiche/common/platform/default/quiche_platform_impl/quiche_test_impl.h
+++ b/quiche/common/platform/default/quiche_platform_impl/quiche_test_impl.h
@@ -53,4 +53,6 @@
   return "quiche/quic/test_tools/quic_http_response_cache_data";
 }
 
+class QuicheScopedDisableExitOnDFatalImpl {};
+
 #endif  // QUICHE_COMMON_PLATFORM_DEFAULT_QUICHE_PLATFORM_IMPL_QUICHE_TEST_IMPL_H_
diff --git a/quiche/quic/masque/masque_client_bin.cc b/quiche/quic/masque/masque_client_bin.cc
index 10a7c39..eefd002 100644
--- a/quiche/quic/masque/masque_client_bin.cc
+++ b/quiche/quic/masque/masque_client_bin.cc
@@ -439,7 +439,7 @@
       quiche::GetQuicheCommandLineFlag(FLAGS_dns_on_client);
 
   for (size_t i = 1; i < urls.size(); ++i) {
-    if (urls[i].starts_with("/")) {
+    if (absl::StartsWith(urls[i], "/")) {
       QuicSpdyClientStream* stream =
           masque_client->masque_client_session()->SendGetRequest(urls[i]);
       while (stream->time_to_response_complete().IsInfinite()) {