This comment seems unnecessarily aggressive given the code is pretty straightforward to navigate. If you were to read the source code a little further you'd jump into this code, called from OPs referenced function: https://chromium.googlesource.com/chromium/src/+/e51dcb0c148... I'm not sure exactly what kind of 'proof' you're looking for , but this tracking isn't being hidden.

Thanks. The OP comment refers to line 35, while the actual code starts at line 232. I still think it's unreasonable to expect someone to scan 200 lines of source code to validate a claim.