Merge "Add: stackcollapse.py converter to Folded Stacks" am: 0452f9d10f am: c4296a7e01 am: e38b58a938

Original change: https://android-review.googlesource.com/c/platform/system/extras/+/1848877

Change-Id: Id5f7de88e6ef85834a6003e99fa6c9f2a45b6531