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

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

Change-Id: Ice05bfc1fae099d37b6e5365c2b79ad208e3ec9b