Merge "Add a method to get all compile-time available system features" into main am: 63933094

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/3272565



Change-Id: I1ee1f63f25b9c23cf81426645a75bc1662807d0e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>