Read-only gsubtree of platform2/system_api/ code

Clone this repo:
  1. 444cac9 common-mk: check-owners: drop noparents settings by Mike Frysinger · 27 hours ago master
  2. 88ad421 system_api: Add Iioservice DBus Constants by Harvey Yang · 34 hours ago
  3. 94ebd18 login: Only enable managed adb sideloading if the policies allow it by Jana Grill · 7 days ago
  4. 0697532 patchpanel: Enable CountersService in Manager by Jie Jiang · 7 days ago
  5. 37be9b2 system_api: generate Plugin VM service Go proto binding by Olya Kalitova · 7 days ago

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.