This is introduced by https://chromium.googlesource.com/chromium/src.git/+/8b270d000b1dde4f6a15aad583ba8dd8fdcb4252 and https://chromium.googlesource.com/chromium/src.git/+/5518dc829d2a338abd76f4812813329f0df40aa9. We need to implement KeyboardEvent.key and KeyboardEvent.code
This is introduced by https:/ /chromium. googlesource. com/chromium/ src.git/ +/8b270d000b1dd e4f6a15aad583ba 8dd8fdcb4252 and https:/ /chromium. googlesource. com/chromium/ src.git/ +/5518dc829d2a3 38abd76f4812813 329f0df40aa9. We need to implement KeyboardEvent.key and KeyboardEvent.code