delete-frame raises other frames

[Matt McClure]

Hi,

When I do C-x 5 0 or M-x delete-frame, my Emacs raises one of its other
frames. I'd prefer that no Emacs frame would raise and that my Mac would
show whatever windows were previously under the just deleted frame.

I made a 20-second screen cast[1] that shows the problem.

   1. I start with a Terminal window.
   2. I start Emacs with `emacs -Q`.
   3. I create a second frame with C-x 5 0.
   4. I stack the three windows from top to bottom:
      1. Second Emacs frame
      2. Terminal window
      3. First Emacs frame
   5. I delete the second Emacs frame using C-x 5 0
   6. I observe that the first Emacs frame raises over the Terminal window.

How can I make the first Emacs frame stay under the Terminal window when
closing the second Emacs frame?

PS. I reported a similar issue[2] using emacsclient. Maybe they have the
same cause.

[1]:
https://drive.google.com/file/d/0B59oD6VJewIZei1PQ3JSUzhCQjA/view?usp=sharing
[2]: https://lists.gnu.org/archive/html/help-gnu-emacs/2016-09/msg00126.html

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