Add type cast definitions for CPDF_Array.

core/src/fpdfapi/fpdf_parser/fpdf_parser_document.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 "../../../include/fpdfapi/fpdf_parser.h"
 #include "../../../include/fpdfapi/fpdf_module.h"
 
 
@@ skipping 288 matching lines @@
     CPDF_Dictionary* pPageDict = GetPage(i);
     if (pPageDict == pThisPageDict) {
       continue;
     }
     CPDF_Object* pContents =
         pPageDict ? pPageDict->GetElement(FX_BSTRC("Contents")) : NULL;
     if (pContents == NULL) {
       continue;
     }
     if (pContents->GetDirectType() == PDFOBJ_ARRAY) {
-      CPDF_Array* pArray = (CPDF_Array*)pContents->GetDirect();
+      CPDF_Array* pArray = pContents->GetDirect()->AsArray();
       for (FX_DWORD j = 0; j < pArray->GetCount(); j++) {
         CPDF_Object* pRef = pArray->GetElement(j);
         if (pRef == NULL || pRef->GetType() != PDFOBJ_REFERENCE) {
           continue;
         }
         if (((CPDF_Reference*)pRef)->GetRefObjNum() == objnum) {
           return TRUE;
         }
       }
     } else if (pContents->GetObjNum() == objnum) {
@@ skipping 33 matching lines @@
 void CPDF_Document::ClearPageData() {
   if (m_pDocPage) {
     CPDF_ModuleMgr::Get()->GetPageModule()->ClearDoc(this);
   }
 }
 void CPDF_Document::ClearRenderData() {
   if (m_pDocRender) {
     CPDF_ModuleMgr::Get()->GetRenderModule()->ClearDocData(m_pDocRender);
   }
 }