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

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

Change-Id: I13b80f754865678f1fedeb3d0aa8fd728a3cd78d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>