Add type cast definitions for CPDF_Name.

core/src/fpdfdoc/doc_bookmark.cpp

Index: core/src/fpdfdoc/doc_bookmark.cpp
diff --git a/core/src/fpdfdoc/doc_bookmark.cpp b/core/src/fpdfdoc/doc_bookmark.cpp
index 9d2a9f61eada5b2af6a966c419f634161387011a..6b020e5957a3a99dd9c0c4edc1a439c656cd3b68 100644
--- a/core/src/fpdfdoc/doc_bookmark.cpp
+++ b/core/src/fpdfdoc/doc_bookmark.cpp
@@ -72,10 +72,10 @@ CPDF_Dest CPDF_Bookmark::GetDest(CPDF_Document* pDocument) const {
     return CPDF_Dest();
   }
   CPDF_Object* pDest = m_pDict->GetElementValue("Dest");
-  if (!pDest) {
+  if (!pDest)
     return CPDF_Dest();
-  }
-  if (pDest->IsString() || pDest->GetType() == PDFOBJ_NAME) {
+
+  if (pDest->IsString() || pDest->IsName()) {
     CPDF_NameTree name_tree(pDocument, FX_BSTRC("Dests"));
     CFX_ByteStringC name = pDest->GetString();
     return CPDF_Dest(name_tree.LookupNamedDest(pDocument, name));