Add overload of CallMethod in SmbProviderClient

Adds an overload of CallMethod in preparation for WriteFile.

Bug: chromium:757625
Change-Id: Idd78a4b3b475c5eda176f7feb03cd52424aad96d
Reviewed-on: https://chromium-review.googlesource.com/893435
Reviewed-by: Zentaro Kavanagh <zentaro@chromium.org>
Commit-Queue: Allen Vicencio <allenvic@chromium.org>
Cr-Commit-Position: refs/heads/master@{#533406}
1 file changed