Implement CopyEntry on SmbFileSystem

This change implements CopyEntry on SmbFileSystem. This change allows
users to copy entries within an SMB Share.

Bug: chromium:757625
Change-Id: I68ee8a73832ca1fab01df22b7c2fafb47760c229
Reviewed-on: https://chromium-review.googlesource.com/929317
Commit-Queue: Bailey Berro <baileyberro@chromium.org>
Reviewed-by: Zentaro Kavanagh <zentaro@chromium.org>
Cr-Commit-Position: refs/heads/master@{#538616}
1 file changed