chrome: Remove unused definition of ShowInstantConfirmDialog().

chrome/browser/app_controller_mac.mm

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #import "chrome/browser/app_controller_mac.h"
 
 #include "base/auto_reset.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/file_path.h"
@@ skipping 1277 matching lines @@
 
 - (void)delayedScreenParametersUpdate {
   FOR_EACH_OBSERVER(ui::WorkAreaWatcherObserver, workAreaChangeObservers_,
       WorkAreaChanged());
 }
 
 @end  // @implementation AppController
 
 //---------------------------------------------------------------------------
 
-namespace browser {
-
-void ShowInstantConfirmDialog(gfx::NativeWindow parent, Profile* profile) {
-  if (Browser* browser = ActivateBrowser(profile)) {
-    chrome::ShowInstantConfirmDialog(browser);
-  } else {
-    chrome::OpenInstantConfirmDialogWindow(profile);
-  }
-}
-
-}  // namespace browser
-
 namespace app_controller_mac {
 
 bool IsOpeningNewWindow() {
   return g_is_opening_new_window;
 }
 
 }  // namespace app_controller_mac