352444fcac
There's no longer any need to make the two arguments have the same signedness, so we can remove a bunch of superfluous (and sometimes dangerous) casts. It turned out I also had to fix the safe_cmp functions to properly handle enums that are implicitly convertible to integers. NOPRESUBMIT=true BUG=webrtc:6645 Review-Url: https://codereview.webrtc.org/2534683002 Cr-Commit-Position: refs/heads/master@{#15281}