The original change caused a Chromium build break due to
"__uncaught_exception" not being defined in concrt.h. This is because Chromium
defines "_HAS_EXCEPTIONS=0" in its GYP, but ANGLE doesn't do this.

This change defines "_HAS_EXCEPTIONS=0" in ANGLE's GYP to match Chromium,
and refines it in ProgramD3D.cpp before including <future>.

Change-Id: Ic324702569bac8f4ae1381f308c4f3f11f190f9e
Reviewed-on: https://chromium-review.googlesource.com/244860Tested-by: Austin Kinross <aukinros@microsoft.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>