cryptohome: Drop the AuthScanResult signal entirely

This signal is superceded by the PrepareAuthFactorProgress signal. The
fingerprint auth process was already updated to send the new signal in a
previous change, this does the second half of the transition by removing
the old signal.

Note that this does _not_ remove the AuthScanResult proto message
itself. This message is in fact a sub-message of the larger prepare
signal and so it's not expected to go away entirely.

BUG=b:347752239
TEST=CQ, unit tests

Change-Id: If0e87327ed98a1db120845d7b21bb933d44fea48
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform2/+/5734961
Tested-by: John Admanski <jadmanski@chromium.org>
Reviewed-by: Zi Lin <lziest@google.com>
Commit-Queue: John Admanski <jadmanski@chromium.org>
NOKEYCHECK=True
GitOrigin-RevId: cf3fb0879af3737f0e669df11ea9e8e4a884eb02
1 file changed
tree: 6a9c2bc1b6e82b0df73ee8dbaa5fd17b270a9159
  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.