Make code compile with clang_use_chrome_plugin (part I)

core/fpdfapi/fpdf_edit/editint.h

Index: core/fpdfapi/fpdf_edit/editint.h
diff --git a/core/fpdfapi/fpdf_edit/editint.h b/core/fpdfapi/fpdf_edit/editint.h
index a7774050ae602123ff0a9a5ddd3359cc8a2f5be9..cd04d5de4f01e5d67249e2945356d00ab6a7cc90 100644
--- a/core/fpdfapi/fpdf_edit/editint.h
+++ b/core/fpdfapi/fpdf_edit/editint.h
@@ -24,6 +24,7 @@ class CPDF_ObjectStream {
   };
 
   CPDF_ObjectStream();
+  ~CPDF_ObjectStream();
 
   void Start();
   FX_FILESIZE End(CPDF_Creator* pCreator);
@@ -46,6 +47,7 @@ class CPDF_XRefStream {
   };
 
   CPDF_XRefStream();
+  ~CPDF_XRefStream();
 
   FX_BOOL Start();
   int32_t CompressIndirectObject(uint32_t dwObjNum,
@@ -66,6 +68,7 @@ class CPDF_XRefStream {
  protected:
   int32_t EndObjectStream(CPDF_Creator* pCreator, FX_BOOL bEOF = TRUE);
   FX_BOOL GenerateXRefStream(CPDF_Creator* pCreator, FX_BOOL bEOF);
+
   size_t m_iSeg;
   CPDF_ObjectStream m_ObjStream;
   CFX_ByteTextBuf m_Buffer;