Affects Debug/Win32 only.

BUG=angleproject:1136

Change-Id: I29fbf06077014c313489be07ff983009afb652fd
Reviewed-on: https://chromium-review.googlesource.com/296362Reviewed-by: Jamie Madill <jmadill@chromium.org>
Tested-by: Jamie Madill <jmadill@chromium.org>