tree 4f1c67688791f371a8ae6c772210de0272707452
parent 47f0f717ed7653c853ef03b5bf511f38e0143c80
author Goktug Gokdogan <goktug@google.com> 1620864561 -0700
committer Goktug Gokdogan <goktug@google.com> 1620934279 -0700

Extract abstraction for CaseMapper.

This is so that we could replace it in WASM to prevent
infinite recursion due to Character.toLowerCase.

PiperOrigin-RevId: 373483600
Change-Id: I24e58c9eb4db6a0d95e180c9bdef4558da08fc2e