Bug 1883551 - Remove nsPIPromptService r=masayuki

It seems to be unused

Differential Revision: https://phabricator.services.mozilla.com/D203550

toolkit/components/windowwatcher/moz.build

@@ -16,7 +16,6 @@ XPIDL_SOURCES += [
     "nsIPromptFactory.idl",
     "nsIPromptService.idl",
     "nsIWindowWatcher.idl",
-    "nsPIPromptService.idl",
     "nsPIWindowWatcher.idl",
 ]
 

toolkit/components/windowwatcher/nsPIPromptService.idl

@@ -1,30 +0,0 @@
-/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-/* The general dialog posing function within nsPromptService, for
-   private consumption, only. */
-
-#include "nsISupports.idl"
-
-interface nsIDOMWindow;
-interface nsIDialogParamBlock;
-
-[uuid(C60A1955-6CB3-4827-8EF8-4F5C668AF0B3)]
-interface nsPIPromptService : nsISupports
-{
-%{C++
-  // eOpeningSound is obsolete but we need to support it for the compatibility.
-  // The implementers should use eSoundEventId instead.
-  enum {eMsg=0, eCheckboxMsg=1, eIconClass=2, eTitleMessage=3, eEditfield1Msg=4,
-        eEditfield2Msg=5, eEditfield1Value=6, eEditfield2Value=7,
-        eButton0Text=8, eButton1Text=9, eButton2Text=10, eButton3Text=11,
-        eDialogTitle=12, eOpeningSound=13};
-  enum {eButtonPressed=0, eCheckboxState=1, eNumberButtons=2,
-        eNumberEditfields=3, eEditField1Password=4, eDefaultButton=5,
-        eDelayButtonEnable=6, eSoundEventId=7};
-%}
-
-   void doDialog(in nsIDOMWindow aParent, in nsIDialogParamBlock aParamBlock, in string aChromeURL);
-};

widget/nsISound.idl

@@ -23,10 +23,6 @@ interface nsISound : nsISupports
   /**
    * In some situations, playEventSound will be called.  Then, each
    * implementations will play a system sound for the event if it's necessary.
-   *
-   * NOTE: Don't change these values because they are used in
-   * nsPIPromptService.idl. So, if they are changed, that makes big impact for
-   * the embedders.
    */
   const unsigned long EVENT_NEW_MAIL_RECEIVED           = 0;
   const unsigned long EVENT_ALERT_DIALOG_OPEN           = 1;