GN/Win: suppport GDI, convert GDI bots to build with GN.

CQ_INCLUDE_TRYBOTS=master.client.skia.compile:Build-Win-MSVC-x86-Debug-GDI-Trybot,Build-Win-MSVC-x86-Release-GDI-Trybot;master.client.skia:Perf-Win-MSVC-GCE-CPU-AVX2-x86_64-Debug-GDI-Trybot,Test-Win-MSVC-GCE-CPU-AVX2-x86_64-Debug-GDI-Trybot,Test-Win-MSVC-GCE-CPU-AVX2-x86_64-Release-GDI-Trybot

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=3324

Change-Id: I3ff2f5d16de9fff7ed77fa5127b96bef55bef957
Reviewed-on: https://skia-review.googlesource.com/3324
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Mike Klein <mtklein@chromium.org>
3 files changed