Remove IXFA_* interfaces.

fpdfsdk/include/fpdfxfa/fpdfxfa_page.h

Index: fpdfsdk/include/fpdfxfa/fpdfxfa_page.h
diff --git a/fpdfsdk/include/fpdfxfa/fpdfxfa_page.h b/fpdfsdk/include/fpdfxfa/fpdfxfa_page.h
index d686fe9baec68cdf99824560e643983787a92fa4..20da040a237ddaaf98c3b2a402036fdf28ef687d 100644
--- a/fpdfsdk/include/fpdfxfa/fpdfxfa_page.h
+++ b/fpdfsdk/include/fpdfxfa/fpdfxfa_page.h
@@ -14,7 +14,7 @@
 
 class CPDFXFA_Document;
 class CPDF_Page;
-class IXFA_PageView;
+class CXFA_FFPageView;
 
 class CPDFXFA_Page {
  public:
@@ -28,8 +28,10 @@ class CPDFXFA_Page {
   CPDFXFA_Document* GetDocument() { return m_pDocument; }
   int GetPageIndex() { return m_iPageIndex; }
   CPDF_Page* GetPDFPage() { return m_pPDFPage; }
-  IXFA_PageView* GetXFAPageView() { return m_pXFAPageView; }
-  void SetXFAPageView(IXFA_PageView* pPageView) { m_pXFAPageView = pPageView; }
+  CXFA_FFPageView* GetXFAPageView() { return m_pXFAPageView; }
+  void SetXFAPageView(CXFA_FFPageView* pPageView) {
+    m_pXFAPageView = pPageView;
+  }
 
   FX_FLOAT GetPageWidth();
   FX_FLOAT GetPageHeight();
@@ -66,7 +68,7 @@ class CPDFXFA_Page {
 
  private:
   CPDF_Page* m_pPDFPage;
-  IXFA_PageView* m_pXFAPageView;
+  CXFA_FFPageView* m_pXFAPageView;
   int m_iPageIndex;
   CPDFXFA_Document* m_pDocument;
   int m_iRef;