Prepare for SkTypeface::openStream to return unique_ptr.

Change-Id: Id2e34f57644ce077589519835e7c7daa6e720de4
Reviewed-on: https://chromium-review.googlesource.com/c/1468764
Reviewed-by: Dominik Röttsches <drott@chromium.org>
Commit-Queue: Ben Wagner <bungeman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#631712}
2 files changed