guest_os_primitives: add private headers

Bug: http://b/283697533
Test: builds
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:b0ea3ee6a61329dae1065948d91c6815ca5c6fe0)
Merged-In: I6ddc8d5cbdc37ccf79213de7824dbba5ea5f09a5
Change-Id: I6ddc8d5cbdc37ccf79213de7824dbba5ea5f09a5
1 file changed