failures in angle_unittests and compilation failure on clang (see: https://build.chromium.org/p/chromium.gpu.fyi/builders/GPU%20Mac%20Builder%20%28dbg%29/builds/30016/steps/compile/logs/stdio) .
This reverts commit b34d1d12.

Change-Id: Ia995fb2db0e891294f3461de01617cb13e5ae381
Reviewed-on: https://chromium-review.googlesource.com/263727Reviewed-by: Geoff Lang <geofflang@chromium.org>
Tested-by: Geoff Lang <geofflang@chromium.org>