'windk' is no longer a thing. There are two separate variables to point
at your compiler (win_vc), and SDK (win_sdk).
'msvc' is no longer a thing, either. By default, we look for 2017 and
then 2015 (in the default locations). If neither is located, use an
assert to let users know they should set win_vc. Then, detect if win_vc
points at a 2017 or 2015 installation, and configure it automatically.
Because the toolchain is now 2017, update the GN files to handle building
x86 in that configuration. In fact, we only support x86 builds (with 2017
or 2015) using the toolchain assets. Keep a 2015 toolchain around as a
new asset, so we can add bot coverage.
Docs-Preview: https://skia.org/?cl=81841
Bug: skia:
Change-Id: I8c68a6f949e54c0e798a219450bbb9406f8dc6ac
Reviewed-on: https://skia-review.googlesource.com/81841
Reviewed-by: Mike Klein <mtklein@chromium.org>
Commit-Queue: Brian Osman <brianosman@google.com>
Recent versions of ANGLE require this. See:
https://skia-review.googlesource.com/c/6698/
This also updates us to the latest version of the Windows SDK,
2015 Update 3 (Windows 10 SDK).
BUG=skia:
CQ_INCLUDE_TRYBOTS=skia.primary:Perf-Win2k8-MSVC-GCE-CPU-AVX2-x86_64-Debug-GDI,Test-Win10-MSVC-ShuttleA-GPU-GTX660-x86_64-Debug-Vulkan,Test-Win2k8-MSVC-GCE-CPU-AVX2-x86_64-Release
Change-Id: I42c8cabc87717f8695763f2c5573b27ab8ab65be
Reviewed-on: https://skia-review.googlesource.com/6801
Reviewed-by: Kevin Lubick <kjlubick@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
