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

fpdfsdk/src/fpdf_transformpage.cpp

 // 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
 
 #include "../../public/fpdf_transformpage.h"
 #include "../include/fsdk_define.h"
 
 namespace {
@@ skipping 148 matching lines @@
   if (pRes) {
     CPDF_Dictionary* pPattenDict = pRes->GetDict(FX_BSTRC("Pattern"));
     if (pPattenDict) {
       FX_POSITION pos = pPattenDict->GetStartPos();
       while (pos) {
         CPDF_Dictionary* pDict = NULL;
         CFX_ByteString key;
         CPDF_Object* pObj = pPattenDict->GetNextElement(pos, key);
         if (pObj->GetType() == PDFOBJ_REFERENCE)
           pObj = pObj->GetDirect();
-        if (pObj->GetType() == PDFOBJ_DICTIONARY) {
-          pDict = (CPDF_Dictionary*)pObj;
+        if (pObj->IsDictionary()) {
+          pDict = pObj->AsDictionary();
         } else if (pObj->GetType() == PDFOBJ_STREAM) {
           pDict = ((CPDF_Stream*)pObj)->GetDict();
         } else
           continue;
 
         CFX_AffineMatrix m = pDict->GetMatrix(FX_BSTRC("Matrix"));
         CFX_AffineMatrix t = *(CFX_AffineMatrix*)matrix;
         m.Concat(t);
         pDict->SetAtMatrix(FX_BSTRC("Matrix"), m);
       }
@@ skipping 133 matching lines @@
       } else if (pDirectObj->GetType() == PDFOBJ_STREAM) {
         pContentArray = new CPDF_Array();
         pContentArray->AddReference(pDoc, pStream->GetObjNum());
         pContentArray->AddReference(pDoc, pDirectObj->GetObjNum());
         pPageDic->SetAtReference("Contents", pDoc,
                                  pDoc->AddIndirectObject(pContentArray));
       }
     }
   }
 }