Add type cast definitions for CPDF_Name.

core/src/fpdfdoc/doc_link.cpp

Index: core/src/fpdfdoc/doc_link.cpp
diff --git a/core/src/fpdfdoc/doc_link.cpp b/core/src/fpdfdoc/doc_link.cpp
index 95411013b48bffe8141f49cb8125c2fc72fbfa19..977efeafd1ef0b8f4c68c79f95479ec706223860 100644
--- a/core/src/fpdfdoc/doc_link.cpp
+++ b/core/src/fpdfdoc/doc_link.cpp
@@ -73,10 +73,10 @@ CPDF_Rect CPDF_Link::GetRect() {
 }
 CPDF_Dest CPDF_Link::GetDest(CPDF_Document* pDoc) {
   CPDF_Object* pDest = m_pDict->GetElementValue("Dest");
-  if (pDest == NULL) {
+  if (!pDest)
     return CPDF_Dest();
-  }
-  if (pDest->IsString() || pDest->GetType() == PDFOBJ_NAME) {
+
+  if (pDest->IsString() || pDest->IsName()) {
     CPDF_NameTree name_tree(pDoc, FX_BSTRC("Dests"));
     CFX_ByteStringC name = pDest->GetString();
     return CPDF_Dest(name_tree.LookupNamedDest(pDoc, name));