smbprovider: Add CopyEntry protobuf

Adds CopyEntry protobuf used for passing inputs to
CopyEntry as well as the method name definition.

BUG=chromium:757625
TEST=emerges
Change-Id: I5cc442b4b8d73484186373e28cf631ae1f70e731
Reviewed-on: https://chromium-review.googlesource.com/923212
Commit-Ready: Bailey Berro <baileyberro@chromium.org>
Tested-by: Bailey Berro <baileyberro@chromium.org>
Reviewed-by: Zentaro Kavanagh <zentaro@chromium.org>
2 files changed