Read-only gsubtree of platform2/system_api/ code

Clone this repo:
  1. 6570481 system_api: add VM_STATUS_DISK_OP_IN_PROGRESS to the list of VM statuses by Dmitry Torokhov · 27 hours ago main
  2. 591d715 system_api: Add PacketCaptureStop D-Bus method by Irem Uguz · 4 days ago
  3. 10900f7 system_api: Remove unused constant by Garrick Evans · 5 days ago
  4. 5495777 shill: Add support for retrieving EAP credentials by Miriam Polzer · 5 days ago
  5. 53a434b rmad: Rename ComponentRepairState to ComponentsRepairStatus by Cheng-Han Yang · 5 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.