Fix error: unknown type name 'uint' in Chromium merge.

https://ci.chromium.org/ui/p/chromium/builders/try/win_chromium_compile_dbg_ng/924062/overview

PiperOrigin-RevId: 385561450

quic/core/quic_connection_test.cc

diff --git a/quic/core/quic_connection_test.cc b/quic/core/quic_connection_test.cc
index 076edac..301639b 100644
--- a/quic/core/quic_connection_test.cc
+++ b/quic/core/quic_connection_test.cc
@@ -12299,7 +12299,7 @@
   PathProbeTestInit(Perspective::IS_CLIENT);
   // Make sure there is no outstanding ACK_FRAME to write.
   connection_.OnCanWrite();
-  uint num_packets_write_attempts = writer_->packets_write_attempts();
+  uint32_t num_packets_write_attempts = writer_->packets_write_attempts();
 
   writer_->SetShouldWriteFail();
   writer_->SetWriteError(QUIC_EMSGSIZE);