Removed Form Resubmission callback from CRWWebDelegate.

ios/web/public/web_state/web_state_delegate.h

Index: ios/web/public/web_state/web_state_delegate.h
diff --git a/ios/web/public/web_state/web_state_delegate.h b/ios/web/public/web_state/web_state_delegate.h
index d5f1590cacf2d6c4cc158273c83a2f4962c5437b..9aefa08f9287cde569c3e2b950b0e92ac81b02ae 100644
--- a/ios/web/public/web_state/web_state_delegate.h
+++ b/ios/web/public/web_state/web_state_delegate.h
@@ -39,6 +39,13 @@ class WebStateDelegate {
   virtual bool HandleContextMenu(WebState* source,
                                  const ContextMenuParams& params);
 
+  // Requests the repost form confirmation dialog. Clients must call |callback|
+  // with true to allow repost and with false to cancel the repost. If this
+  // method is not implemented then WebState will repost the form.
+  virtual void ShowRepostFormWarningDialog(
+      WebState* source,
+      const base::Callback<void(bool)>& callback);
+
   // Returns a pointer to a service to manage dialogs. May return nullptr in
   // which case dialogs aren't shown.
   // TODO(crbug.com/622084): Find better place for this method.