Bug 1909311 - Remove nsIFormControlFrame and nsITextControlFrame. r=masayuki,layout-reviewers,dholbert

It's a rather useless interface:

 * nsITextControlFrame is only implemented by nsTextControlFrame, so we
   can just use that.
 * nsIFormControlFrame had very few actual functionality, mostly
   scattered around:
    * SetFormProperty(select) was only useful for nsTextControlFrame.
    * SetFormProperty(value) was only called on file controls.
    * SetFocus() did mostly nothing, or things that can be done in
      ElementStateChanged instead.

There are some do_QueryFrame calls that I replaced for better checks in
font inflation and nsIFrame, but I'll adjust to preserve behavior if you
insist (it just such a somewhat-random check).

Differential Revision: https://phabricator.services.mozilla.com/D217322

dom/html/HTMLFormElement.cpp

@@ -38,7 +38,6 @@
 #include "nsFocusManager.h"
 #include "nsGkAtoms.h"
 #include "nsHTMLDocument.h"
-#include "nsIFormControlFrame.h"
 #include "nsInterfaceHashtable.h"
 #include "nsPresContext.h"
 #include "nsQueryObject.h"