GitLab

Replace uses of new with std::make_unique or base::WrapUnique.
See http://go/totw/126 for motivation.

For scoped_refptr pointers use base::MakeRefCounted.

BUG=b:116527691
TEST=Unit tests pass

Change-Id: I42ffc6055b1d1d16dbc203e9b87d24b2295d0c76
Reviewed-on: https://chromium-review.googlesource.com/c/1340606
Commit-Queue: Gabriel Marin <gmx@chromium.org>
Reviewed-by: Ilya Sherman <isherman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#609481}