decouple werror and -isystem in third_party
Some users of Skia want to build these with -I instead of -isystem, and
until now we've piggybacked it on werror, but it's still kind of
annoying to see warnings even if they're not fatal.
Change-Id: I5a349b2571adc2f94c75dc17317666ddc2dec373
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/297788
Commit-Queue: Mike Klein <mtklein@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
Reviewed-by: John Stiles <johnstiles@google.com>
3 files changed