bug#21415: 25.0.50; Emacs Trunk -- pixelwise width/height for x-create-frame

[Keith David Bershatsky]

I am trying to do three things:

(1) efficiently create a new frame that is exact as to pixelwise width/height 
so that `(set-frame-size FRAME WIDTH PIXELWISE)` is not needed after each new 
frame is created;

(2) pass a pixelwise argument to `x-create-frame` that would resolve the first 
goal [?];

(3) avoid intermittent visual flickering of the entire frame that is caused by 
a frame creation at the default size of `(width . 80) (height . 35)` followed 
immediately by programmatically enlarging the frame substantially with 
`set-frame-size` using the pixelwise argument.  [The intermittent visual 
flickering can be avoided by setting the `mode-line-format` to `nil`; however, 
the default `mode-line-format` causes/contributes to the visual flickering.]  
[This did not happen with the Emacs Trunk from last year, but happens now 
intermittently with a current version.]

Thanks,

Keith

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

In GNU Emacs 25.0.50.1 (x86_64-apple-darwin10.8.0, NS appkit-1038.36 Version 
10.6.8 (Build 10K549))
 of 2015-08-29 on server.private
Repository revision: 24ae05251587fbba4687544ec57565c8bc48071a
Windowing system distributor `Apple', version 10.3.1038
Configured using:
 `configure --with-ns --without-imagemagick'

Configured features:
DBUS ACL LIBXML2 ZLIB TOOLKIT_SCROLL_BARS NS

Important settings:
  locale-coding-system: utf-8-unix

Major mode: FM

Minor modes in effect:
  tb-mode: t
  sb-mode: t
  ml-mode: t
  ds-mode: t
  sd-mode: t
  bc-mode: t

Recent messages:
*beep*
Quit: "lawlist-line-move -- lawlist-beginning-of-buffer"
*beep*
Quit: "lawlist-line-move -- lawlist-beginning-of-buffer"
*beep*
Quit: "lawlist-line-move -- lawlist-beginning-of-buffer"
Wrote /Users/HOME/.0.data/.0.emacs/.scratch
Emacs:  Emacs Trunk -- pixelwise width/height fo . . .
*beep*
Making completion list...

Load-path shadows:
None found.

Features:
(shadow emacsbug sendmail .multiple_cursors lawlist-ztree lawlist-yas
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Memory information:
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 (strings 32 196673 24233)
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