[automerger skipped] Add getStalledTransactionInfo method to SurfaceComposer am: b0b1d13e -s ours

am skip reason: Merged-In I9c464ee302e7bafe8d45021063368fcd984e27ec with SHA-1 cee446c2 is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/24358425



Change-Id: I875c70ac4f232a0d41264a12e35c1ec1d29be9f9
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>