Clean up CPDFSDK_PageView methods.

fpdfsdk/include/fsdk_mgr.h

Index: fpdfsdk/include/fsdk_mgr.h
diff --git a/fpdfsdk/include/fsdk_mgr.h b/fpdfsdk/include/fsdk_mgr.h
index a0adf048232ed4227917de82ff76a5a0e73485ea..2892407f3f5a46e3743625888dc53d409558769a 100644
--- a/fpdfsdk/include/fsdk_mgr.h
+++ b/fpdfsdk/include/fsdk_mgr.h
@@ -569,11 +569,9 @@ class CPDFSDK_PageView final : public CPDF_Page::View {
   CPDFSDK_Annot* AddAnnot(CXFA_FFWidget* pPDFAnnot);
   CPDFSDK_Annot* GetAnnotByXFAWidget(CXFA_FFWidget* hWidget);
   CPDFXFA_Page* GetPDFXFAPage() { return m_page; }
-  CPDF_Page* GetPDFPage();
-#else
-  CPDF_Page* GetPDFPage() { return m_page; }
 #endif  // PDF_ENABLE_XFA
 
+  CPDF_Page* GetPDFPage() const;
   CPDF_Document* GetPDFDocument();
   CPDFSDK_Document* GetSDKDocument() { return m_pSDKDoc; }
   FX_BOOL OnLButtonDown(const CFX_FloatPoint& point, FX_UINT nFlag);