Fix unique_ptr typo in Skia Dawn

Change-Id: I14c005db9ef693eed0bcd07d4effbadc65e2004c
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/255355
Commit-Queue: Sean Gilhuly <sgilhuly@chromium.org>
Commit-Queue: Mike Klein <mtklein@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
Reviewed-by: Stephen White <senorblanco@chromium.org>
1 file changed