Kill CFX_Object.

core/src/fpdfdoc/doc_form.cpp

Index: core/src/fpdfdoc/doc_form.cpp
diff --git a/core/src/fpdfdoc/doc_form.cpp b/core/src/fpdfdoc/doc_form.cpp
index d695cb98bab8aa6087d163ca5512c24c8fe58a18..d8ca525f0a09e9722f7eee4c7580560a5506f2e9 100644
--- a/core/src/fpdfdoc/doc_form.cpp
+++ b/core/src/fpdfdoc/doc_form.cpp
@@ -29,7 +29,7 @@ FX_BOOL			NeedPDFEncodeForFieldTree(CPDF_Dictionary* pFieldDict, int nLevel = 0)
 void			EncodeFieldName(const CFX_WideString& csName, CFX_ByteString& csT);
 void			UpdateEncodeFieldName(CPDF_Dictionary* pFieldDict, int nLevel = 0);
 const int nMaxRecursion = 32;
-class _CFieldNameExtractor : public CFX_Object
+class _CFieldNameExtractor 
 {
 public:
     _CFieldNameExtractor(const CFX_WideString& full_name)
@@ -54,10 +54,10 @@ protected:
     FX_LPCWSTR m_pEnd;
     FX_LPCWSTR m_pCur;
 };
-class CFieldTree : public CFX_Object
+class CFieldTree 
 {
 public:
-    struct _Node : public CFX_Object {
+    struct _Node  {
         _Node *parent;
         CFX_PtrArray children;
         CFX_WideString short_name;