Add desktop_window_tree_host_win.h to ui/views' public api

The file desktop_window_tree_host_win.h is used by chrome/browser/ui/views
(apps/app_window_desktop_window_tree_host_win.h,
frame/browser_desktop_window_tree_host_win.h, ime/ime_window_view.cc and
tabs/window_finder_win.cc) so it's part of the external API of ui/views
and the file needs to be listed as such in the "public" part of the target.

This error is detected by gn gen --check in some builds and not in others.
I think it has gone undetected because with split_static_library you get
an empty public list for the part where this file belongs. No |public|
list means that all of |sources| is public. Or something similar.

(Fix by oscarj who had to leave for the weekend)

Change-Id: If6b5805bdd20c988e45b132dd680bb73b667e16c
Reviewed-on: https://chromium-review.googlesource.com/1127943
Reviewed-by: Sadrul Chowdhury <sadrul@chromium.org>
Commit-Queue: Daniel Bratell <bratell@opera.com>
Cr-Commit-Position: refs/heads/master@{#572989}
1 file changed