Support dumping from given position and migrate code am: 4602c37b

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/2797322



Change-Id: Ib725c1654a350bcaaec8771a0a48ef435a4440fe
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>