Fix android -Wshorten-64-to-32 error: https://logs.chromium.org/logs/chromium/buildbucket/cr-buildbucket.appspot.com/8844689770192651952/+/u/compile__with_patch_/raw_io.output_failure_summary_
Fix android -Wshorten-64-to-32 error: https://logs.chromium.org/logs/chromium/buildbucket/cr-buildbucket.appspot.com/8844689770192651952/+/u/compile__with_patch_/raw_io.output_failure_summary_

The compiler option is not added to default_copts because it breaks too many other quic and spdy code. This fix only makes the chromium bot green.

PiperOrigin-RevId: 379252123

google/quiche,google/quiche,google/quiche,google/quiche