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

fpdfsdk/src/fpdfeditpage.cpp

Index: fpdfsdk/src/fpdfeditpage.cpp
diff --git a/fpdfsdk/src/fpdfeditpage.cpp b/fpdfsdk/src/fpdfeditpage.cpp
index f2d13d6ba1c6bce33e96b29f2e837e1728c647be..7b70526b0c20e804e26d72486a890fb0faf88b78 100644
--- a/fpdfsdk/src/fpdfeditpage.cpp
+++ b/fpdfsdk/src/fpdfeditpage.cpp
@@ -103,7 +103,7 @@ DLLEXPORT int STDCALL FPDFPage_GetRotation(FPDF_PAGE page) {
     else {
       if (pDict->KeyExist("Parent")) {
         CPDF_Dictionary* pPages =
-            (CPDF_Dictionary*)pDict->GetElement("Parent")->GetDirect();
+            ToDictionary(pDict->GetElement("Parent")->GetDirect());
         while (pPages) {
           if (pPages->KeyExist("Rotate")) {
             rotate =
@@ -113,8 +113,7 @@ DLLEXPORT int STDCALL FPDFPage_GetRotation(FPDF_PAGE page) {
                     : 0;
             break;
           } else if (pPages->KeyExist("Parent"))
-            pPages =
-                (CPDF_Dictionary*)pPages->GetElement("Parent")->GetDirect();
+            pPages = ToDictionary(pPages->GetElement("Parent")->GetDirect());
           else
             break;
         }
@@ -213,7 +212,7 @@ FPDFPageObj_HasTransparency(FPDF_PAGEOBJECT pageObject) {
     return TRUE;
 
   CPDF_Dictionary* pSMaskDict =
-      pGeneralState ? (CPDF_Dictionary*)pGeneralState->m_pSoftMask : NULL;
+      pGeneralState ? ToDictionary(pGeneralState->m_pSoftMask) : NULL;
   if (pSMaskDict)
     return TRUE;