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

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

Change-Id: I1de4bdd797de3a6b062613a81c58b6fc9ba2176c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>