Reland r114898: Add TabModalConfirmDialogDelegate.

chrome/browser/ui/cocoa/browser_window_cocoa.mm

Index: chrome/browser/ui/cocoa/browser_window_cocoa.mm
diff --git a/chrome/browser/ui/cocoa/browser_window_cocoa.mm b/chrome/browser/ui/cocoa/browser_window_cocoa.mm
index efd02429f8ab194686a590ed0509f5aec02f8de5..e8170b349798924f8d81569c6298650cf768cc68 100644
--- a/chrome/browser/ui/cocoa/browser_window_cocoa.mm
+++ b/chrome/browser/ui/cocoa/browser_window_cocoa.mm
@@ -31,7 +31,6 @@
 #import "chrome/browser/ui/cocoa/info_bubble_view.h"
 #import "chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.h"
 #import "chrome/browser/ui/cocoa/nsmenuitem_additions.h"
-#include "chrome/browser/ui/cocoa/repost_form_warning_mac.h"
 #include "chrome/browser/ui/cocoa/restart_browser.h"
 #include "chrome/browser/ui/cocoa/status_bubble_mac.h"
 #include "chrome/browser/ui/cocoa/task_manager_mac.h"
@@ -431,11 +430,6 @@ DownloadShelf* BrowserWindowCocoa::GetDownloadShelf() {
   return [shelfController bridge];
 }
 
-void BrowserWindowCocoa::ShowRepostFormWarningDialog(
-    TabContents* tab_contents) {
-  RepostFormWarningMac::Create(GetNativeHandle(), tab_contents);
-}
-
 void BrowserWindowCocoa::ShowCollectedCookiesDialog(
     TabContentsWrapper* wrapper) {
   // Deletes itself on close.