Add CPDF_Document::Extension::DeletePage()

Replaces one compile-time #ifdef XFA with a dynamic check and
a call through a virtual API that prevents the CPDF code from
knowing anything about the XFA code.

Change-Id: If0ff9b6918b908b3eac824fe1d525c6d4f7316e7
Reviewed-on: https://pdfium-review.googlesource.com/31890
Reviewed-by: dsinclair <dsinclair@chromium.org>
Commit-Queue: Tom Sepez <tsepez@chromium.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/core/fpdfapi/parser/cpdf_document.h b/core/fpdfapi/parser/cpdf_document.h
index 4466df640e..82af1cfd82 100644
--- a/core/fpdfapi/parser/cpdf_document.h
+++ b/core/fpdfapi/parser/cpdf_document.h
@@ -45,6 +45,7 @@ class CPDF_Document : public CPDF_IndirectObjectHolder {
   class Extension {
    public:
     virtual ~Extension() {}
+    virtual void DeletePage(int page_index) = 0;
   };
 
   explicit CPDF_Document(std::unique_ptr<CPDF_Parser> pParser);