system_api: remove mic position constant

MicPositions are not used by anyone, so we are removing the whole
system.

BUG=b:159943667
TEST=Build test adhd

Change-Id: I2e71d140851f9f7bb12ea84d92e0fdb4055ce7c1
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform2/+/2283849
Reviewed-by: Cheng-Yi Chiang <cychiang@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Tested-by: Curtis Malainey <cujomalainey@chromium.org>
Commit-Queue: Curtis Malainey <cujomalainey@chromium.org>
Cr-Mirrored-From: https://chromium.googlesource.com/chromiumos/platform2
Cr-Mirrored-Commit: 5942a5d29b5d9e408c29142f1dbbae3216937494
1 file changed
tree: 73e9d0214443039e54e0c1929e170ac36daca106
  1. constants/
  2. dbus/
  3. src/
  4. switches/
  5. .gitignore
  6. BUILD.gn
  7. build.rs
  8. Cargo.toml
  9. LICENSE
  10. OWNERS
  11. README.md
  12. 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.