[clang] [clang-tools-extra] [lldb] [llvm] [Allocator] Drop RedZoneSize (non-sanitizer) and BytesAllocated members (PR #205711)

[Alexis Engelke via cfe-commits]

https://github.com/aengelke approved this pull request.

LGTM, but please wait for a few days in case there are objections regarding the feature removal.

Having info on "bytes wasted" might be handy for development. In case someone wants it back, we could approximate it as follows by ignoring padding: AllocateSlow does BytesAllocated += (End - 1) - Cur; getBytesAllocated returns Cur ? BytesAllocated + End - 1 - Cur : 0.

https://github.com/llvm/llvm-project/pull/205711