tree 0b1c625d9a005554f204a46a27ad024c9e367fdb
parent 5f53d5302f301187359bb33f629bf24f51c279ca
author Corentin Wallez <cwallez@chromium.org> 1570520163 +0000
committer Commit Bot service account <commit-bot@chromium.org> 1570520163 +0000

Allow ResultOrError to downcast from backend to frontend types

More concretely this makes Result<T*, E*> able to be move-constructed
from Result<ChildClassOfT*, E*> for free.

BUG=dawn:19

Change-Id: Iea2b8997079ac3bfcf270d6b73a79cf5cac2c06f
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/11860
Reviewed-by: Austin Eng <enga@chromium.org>
Reviewed-by: Kai Ninomiya <kainino@chromium.org>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>