Disable clang -Wsigned-enum-bitfield warnings

Full error text:
error: enums in the Microsoft ABI are signed integers by default;
consider giving the enum Properties an unsigned underlying type
to make this code portable [-Werror,-Wsigned-enum-bitfield]

BUG=skia:

Change-Id: I1491dd94c894e383fed401880fc04562140f7a66
Reviewed-on: https://skia-review.googlesource.com/6594
Reviewed-by: Mike Klein <mtklein@chromium.org>
Commit-Queue: Matt Sarett <msarett@google.com>

diff --git a/gn/BUILD.gn b/gn/BUILD.gn
index 3b50286..32794ab 100644 (file)
--- a/gn/BUILD.gn
+++ b/gn/BUILD.gn
@@ -313,6 +313,7 @@ config("warnings") {
         "-Wno-shadow",
         "-Wno-shift-sign-overflow",
         "-Wno-sign-conversion",
+        "-Wno-signed-enum-bitfield",
         "-Wno-switch-enum",
         "-Wno-undef",
         "-Wno-unreachable-code",