Merge "Add report_sample.py --header option, like perf script --header" am: c57a063a79 am: de72c6e100 am: ba8302ae15

Original change: https://android-review.googlesource.com/c/platform/system/extras/+/1828112

Change-Id: I82805bd73601b37cc0ad1c7f488edb7409a3d725