Catapult uses this for win32con

Bug: 869249
Change-Id: I6775ff7834100d2b4a55eee3330369fc15b2f14f
Reviewed-on: https://chromium-review.googlesource.com/1157139Reviewed-by: Frank Barchard <fbarchard@chromium.org>
Commit-Queue: Ryan Tseng <hinoka@chromium.org>