GitLab

This code only works when USE_AURA, which is when gfx::NativeView is an
aura::Window.

BUG=None

Change-Id: I6fd619acb4bcf854a111d43295ed20186d47f872
Reviewed-on: https://chromium-review.googlesource.com/565300
Commit-Queue: Elly Fong-Jones <ellyjones@chromium.org>
Reviewed-by: Robert Liao <robliao@chromium.org>
Reviewed-by: Peter Kasting <pkasting@chromium.org>
Cr-Commit-Position: refs/heads/master@{#486776}