Add a method to OatFileAssistantContext to fetch all information. am: 8911b301da am: 154db44b1b am: 18e0976b5f

Original change: https://android-review.googlesource.com/c/platform/art/+/2203777

Change-Id: Ifa0d4ebc4852d9a993f06e9a2d5c4f8ce735f33e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>