Remove IXFA_* interfaces.

xfa/include/fxfa/xfa_rendercontext.h

+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#ifndef XFA_INCLUDE_FXFA_XFA_RENDERCONTEXT_H_
+#define XFA_INCLUDE_FXFA_XFA_RENDERCONTEXT_H_
+
+#include "xfa/include/fxfa/fxfa.h"
+
+class CXFA_RenderContext {
+ public:
+  CXFA_RenderContext();
+  ~CXFA_RenderContext();
+
+  void Release() { delete this; }
+  int32_t StartRender(CXFA_FFPageView* pPageView,
+                      CFX_Graphics* pGS,
+                      const CFX_Matrix& matrix,
+                      const CXFA_RenderOptions& options);
+  int32_t DoRender(IFX_Pause* pPause = NULL);
+  void StopRender();
+
+ protected:
+  IXFA_WidgetIterator* m_pWidgetIterator;
+  CXFA_FFWidget* m_pWidget;
+  CXFA_FFPageView* m_pPageView;
+  CFX_Graphics* m_pGS;
+  CFX_Matrix m_matrix;
+  CXFA_RenderOptions m_options;
+  uint32_t m_dwStatus;
+  CFX_RectF m_rtClipRect;
+};
+
+#endif  // XFA_INCLUDE_FXFA_XFA_RENDERCONTEXT_H_