chromium/third_party/apple_apsl/README.chromium

Name: Darwin
URL: https://www.opensource.apple.com/
Version: unknown
Security Critical: yes
Shipped: yes
License: Apple Public Source License 2.0
License File: LICENSE

One file is excerpted here:

dnsinfo.h from:
https://www.opensource.apple.com/source/configd/configd-453.19/dnsinfo/dnsinfo.h

Provides dns_config_t which is used by /net/dns/dns_config_service_posix.cc to
obtain system DNS configuration on Mac OS X. This private header is also used by
Apple's open source mDNSResponder.

Modifications:
- Removed Availability.h and the corresponding macros.