Note that LONG is a 32-bit signed integer and is typedef'ed to a long in windows header files.

Nektar, do you have any further reason why we should make this change other than consistency at this point?

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/5373fe3ca62f83f6288935ee7bf83e33115fa65f

commit 5373fe3ca62f83f6288935ee7bf83e33115fa65f
Author: Doug Turner <dougt@chromium.org>
Date: Wed Aug 23 23:45:34 2017

Use LONG instead of long in public MSCOM Accessibility APIs.

Bug:  749911 
Change-Id: I02fdad8a626b90d60aaab3d5c558c137b4fdd12e
Reviewed-on: https://chromium-review.googlesource.com/592791
Commit-Queue: Doug Turner <dougt@chromium.org>
Reviewed-by: Nektarios Paisios <nektar@chromium.org>
Cr-Commit-Position: refs/heads/master@{#496873}
[modify] https://crrev.com/5373fe3ca62f83f6288935ee7bf83e33115fa65f/ui/accessibility/platform/ax_platform_node_win.cc
[modify] https://crrev.com/5373fe3ca62f83f6288935ee7bf83e33115fa65f/ui/accessibility/platform/ax_platform_node_win.h