Implement CopyEntry on SmbProviderClient

This change implements CopyEntry on SmbProviderClient

Bug: chromium:757625
Change-Id: I3c9d68f34f80e6019417e39af87934c6431b3c2b
Reviewed-on: https://chromium-review.googlesource.com/929424
Commit-Queue: Bailey Berro <baileyberro@chromium.org>
Reviewed-by: Zentaro Kavanagh <zentaro@chromium.org>
Cr-Commit-Position: refs/heads/master@{#538604}
4 files changed