From 522d77db501ab7ae33f7d17e4ab456232ca5a70c Mon Sep 17 00:00:00 2001
From: Tom Sepez <tsepez@chromium.org>
Date: Sat, 28 Jul 2018 00:00:25 +0000
Subject: Add CPDSDK_Annot::AsBAAnnot() checked downcast method

XFA introduces some additional subclasses, so it doesn't hurt
to be sure in all cases before making a static cast.

Change-Id: I7447ca58be0b57201b39ba40a3fc5f47505cee58
Reviewed-on: https://pdfium-review.googlesource.com/39013
Commit-Queue: Lei Zhang <thestig@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
---
 fpdfsdk/cpdfsdk_annot.cpp | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'fpdfsdk/cpdfsdk_annot.cpp')

diff --git a/fpdfsdk/cpdfsdk_annot.cpp b/fpdfsdk/cpdfsdk_annot.cpp
index cfd87b3255..75967a301f 100644
--- a/fpdfsdk/cpdfsdk_annot.cpp
+++ b/fpdfsdk/cpdfsdk_annot.cpp
@@ -27,6 +27,10 @@ CPDFSDK_Annot::CPDFSDK_Annot(CPDFSDK_PageView* pPageView)
 
 CPDFSDK_Annot::~CPDFSDK_Annot() {}
 
+CPDFSDK_BAAnnot* CPDFSDK_Annot::AsBAAnnot() {
+  return nullptr;
+}
+
 #ifdef PDF_ENABLE_XFA
 
 bool CPDFSDK_Annot::IsXFAField() {
-- 
cgit v1.2.3