system_api: Add options to save and restore SMB share password.

This CL allows Chrome to request that the share password be saved to or
restored from the profile's daemon-store directory.

BUG=chromium:891462
TEST=emerge-chell system_api smbprovider + unit tests

Change-Id: I62b816d01f2a9b08f353c5d3f1a05d4473e390b0
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform2/+/1663747
Reviewed-by: Sam McNally <sammc@chromium.org>
Tested-by: Anand Mistry <amistry@chromium.org>
Commit-Queue: Jason Clinton <jclinton@chromium.org>
Cr-Mirrored-From: https://chromium.googlesource.com/chromiumos/platform2
Cr-Mirrored-Commit: e8b7a53e0cb2730b24e78ce4912fa0eb8be72c94
1 file changed
tree: b68a01a0d6a6bbb16147e5e182be5079e226b473
  1. BUILD.gn
  2. LICENSE
  3. OWNERS
  4. README.md
  5. constants/
  6. dbus/
  7. switches/
  8. system_api.pc
README.md

This directory (platform2/system_api) contains constants and definitions like D-Bus service names that are shared between Chromium and Chromium OS.

This directory is only for things like headers and .proto files. No implementation should be added.

When writting a .proto file make sure to use:

option optimize_for = LITE_RUNTIME;

This will force usage of a lite protobuf instead of a full/heavy weight protobuf. The browser only links against the light version, so you will get cryptic link errors about missing parts of Message if you define a protobuf here and then try to use it in Chrome. Currently CrOS links against the full protobuffer library, but that might change in the future.

When declaring a protobuf, avoid use of required unless it is exactly what you mean. “Required is Forever” and very rarely should actually be used. Consult Protocol Buffer Basics: C++ for a detailed of this issue.