Merge to XFA: Use override in more classes in fpdfsdk/

fpdfsdk/include/javascript/IJavaScript.h

Index: fpdfsdk/include/javascript/IJavaScript.h
diff --git a/fpdfsdk/include/javascript/IJavaScript.h b/fpdfsdk/include/javascript/IJavaScript.h
index d2cbfb1dd8af87bf53a498287fb01657ef1b0ed3..9c232b01fbdf4058854ee91f53b50ee72cc7b18d 100644
--- a/fpdfsdk/include/javascript/IJavaScript.h
+++ b/fpdfsdk/include/javascript/IJavaScript.h
@@ -18,7 +18,6 @@ class CPDFSDK_Document;
 
 class IFXJS_Context {
  public:
-  virtual ~IFXJS_Context() {}
   virtual FX_BOOL Compile(const CFX_WideString& script,
                           CFX_WideString& info) = 0;
   virtual FX_BOOL RunScript(const CFX_WideString& script,
@@ -129,6 +128,9 @@ class IFXJS_Context {
   virtual void OnExternal_Exec() = 0;
 
   virtual void EnableMessageBox(FX_BOOL bEnable) = 0;
+
+ protected:
+  virtual ~IFXJS_Context() {}
 };
 
 class IFXJS_Runtime {
@@ -147,7 +149,7 @@ class IFXJS_Runtime {
                                   FXJSE_HVALUE hValue) = 0;
 
  protected:
-  ~IFXJS_Runtime() {}
+  virtual ~IFXJS_Runtime() {}
 };
 
 class CPDFDoc_Environment;