Merge "simpleperf: add type hints in simpleperf_report_lib.py." am: 0bc00c609a am: 51307916c7

Original change: https://android-review.googlesource.com/c/platform/system/extras/+/1707303

Change-Id: I4ad668560f65d1e9c62e4a1dae8474ec3af01cb3