drop warnings and -Werror from is_official_builds
People using is_official_build don't really want to see warnings.
They're for devs, not users.
The somewhat odd update to gn/BUILDCONFIG.gn keeps command
line flag precedence (later == more important) unchanged.
Change-Id: I1a04a35f066b7408021d474535f0dbf4928e21d3
Reviewed-on: https://skia-review.googlesource.com/151380
Commit-Queue: Brian Salomon <bsalomon@google.com>
Auto-Submit: Mike Klein <mtklein@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
3 files changed