Set dawn_egl_registry_dir for dawn

So dawn can use egl registry checkout in skia

Bug: b/298194906
Change-Id: Icd28756a4dd8d09f72c26fa5ec6761730cbb7605
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/750136
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Peng Huang <penghuang@chromium.org>
1 file changed