tree bfd5c6a4507ca00f95b6f84b70a351da36e18834
parent d85489e7ad0469aa00d1e4d2379186a3f008005e
author davidben <davidben@google.com> 1742421397 -0700
committer Copybara-Service <copybara-worker@google.com> 1742421457 -0700

Migrate `absl::variant` to `std::variant`

This was largely automated with the following commands:

```
fgrep -lr '"third_party/absl/types/variant.h"' third_party/{quiche,http2,quic} | xargs sed -i -e 's;"third_party/absl/types/variant.h";<variant>;g'
fgrep -lr 'absl::visit' third_party/{quiche,http2,quic} | grep -v METADATA.common | xargs sed -i -e 's/absl::visit/std::visit/g'
fgrep -lr 'absl::variant' third_party/{quiche,http2,quic} | grep -v METADATA.common | xargs sed -i -e 's/absl::variant/std::variant/g'
fgrep -lr 'absl::get' third_party/{quiche,http2,quic} | grep -v METADATA.common | xargs sed -i -e 's/absl::get/std::get/g'
fgrep -lr 'absl::holds_alternative' third_party/{quiche,http2,quic} | grep -v METADATA.common | xargs sed -i -e 's/absl::holds_alternative/std::holds_alternative/g'
fgrep -lr 'absl::monostate' third_party/{quiche,http2,quic} | grep -v METADATA.common | xargs sed -i -e 's/absl::monostate/std::monostate/g'
```

This should be a no-op when `absl::variant` is already a typedef for `std::variant`, which should now be the case everywhere.

PiperOrigin-RevId: 738550360