cryptohome: Delete rpc.proto copy of CryptohomeErrorCode

This copy of the error codes is obsolete, only the one in the
user_data_auth package should be used. This does require deleting a few
stray references to the rpc.proto versions from a few unit tests.

This bundles together the API change and the cryptohome change because
the API changes are heavily coupled to the static asserts in cryptohome
and it doesn't really make sense to separate the removal.

BUG=b:135984863
TEST=built all cryptohome code
TEST=built chromium code with changes applied

Change-Id: I65de67412cc5fafbae1789e37fd835e8ba4baa2e
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform2/+/5690410
Commit-Queue: John Admanski <jadmanski@chromium.org>
Tested-by: John Admanski <jadmanski@chromium.org>
Reviewed-by: Zi Lin <lziest@google.com>
NOKEYCHECK=True
GitOrigin-RevId: 2dff352b7a9cedb386bc731856db9b19dc050129
1 file changed
tree: 320d6295e27e02b3b229ed9e2fb2d3304531e4ad
  1. constants/
  2. dbus/
  3. mojo/
  4. non_standard_ipc/
  5. proto/
  6. src/
  7. switches/
  8. .gitignore
  9. BUILD.gn
  10. build.rs
  11. Cargo.toml
  12. DIR_METADATA
  13. LICENSE
  14. OWNERS
  15. README.md
  16. 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.