[canvaskit] Remove getproc when creating WebGL interface
This saves about 15kb of wasm code size (4kb gzipped), 11kb
of JS code size (2kb gzipped) and about 10ms
when creating a new surface (~35ms -> 25ms in a local test).
This also gates the webgl code more strongly (off unless you
really request it), since the headers won't be available
except in an emscripten environment.
Change-Id: I303f6c342c72e7cfe29be241f55ae8f5631a3f75
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/311916
Reviewed-by: Brian Salomon <bsalomon@google.com>
5 files changed