Revert "Revert "Add type cast definitions for CPDF_Dictionary.""

core/src/fpdfapi/fpdf_render/fpdf_render_image.cpp

Index: core/src/fpdfapi/fpdf_render/fpdf_render_image.cpp
diff --git a/core/src/fpdfapi/fpdf_render/fpdf_render_image.cpp b/core/src/fpdfapi/fpdf_render/fpdf_render_image.cpp
index 222f58c088c58b5347a70ff412f8e86d2d04ea7b..e4afdd80c2d39aae647e72e1cae5be0e15066c55 100644
--- a/core/src/fpdfapi/fpdf_render/fpdf_render_image.cpp
+++ b/core/src/fpdfapi/fpdf_render/fpdf_render_image.cpp
@@ -1056,8 +1056,8 @@ CFX_DIBitmap* CPDF_RenderStatus::LoadSMask(CPDF_Dictionary* pSMaskDict,
   }
   CPDF_Function* pFunc = NULL;
   CPDF_Object* pFuncObj = pSMaskDict->GetElementValue(FX_BSTRC("TR"));
-  if (pFuncObj && (pFuncObj->GetType() == PDFOBJ_DICTIONARY ||
-                   pFuncObj->GetType() == PDFOBJ_STREAM)) {
+  if (pFuncObj &&
+      (pFuncObj->IsDictionary() || pFuncObj->GetType() == PDFOBJ_STREAM)) {
     pFunc = CPDF_Function::Load(pFuncObj);
   }
   CFX_AffineMatrix matrix = *pMatrix;