Dex: Use DexFileContainer instead of begin/size. am: 2bcd3a0a86 am: 9a668d5a2c

Original change: https://android-review.googlesource.com/c/platform/art/+/2402700

Change-Id: Id0d452072eee9ef74f0109a7c8185e6c14f1037e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>