Use override in more classes in fpdfsdk/

fpdfsdk/include/javascript/PublicMethods.h

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #ifndef FPDFSDK_INCLUDE_JAVASCRIPT_PUBLICMETHODS_H_
 #define FPDFSDK_INCLUDE_JAVASCRIPT_PUBLICMETHODS_H_
 
 #include "JS_Define.h"
 
 class CJS_PublicMethods : public CJS_Object {
  public:
-  CJS_PublicMethods(JSFXObject pObject) : CJS_Object(pObject){};
-  virtual ~CJS_PublicMethods(void){};
+  CJS_PublicMethods(JSFXObject pObject) : CJS_Object(pObject) {}
+  ~CJS_PublicMethods() override {}
 
  public:
   static FX_BOOL AFNumber_Format(IFXJS_Context* cc,
                                  const CJS_Parameters& params,
                                  CJS_Value& vRet,
                                  CFX_WideString& sError);
   static FX_BOOL AFNumber_Keystroke(IFXJS_Context* cc,
                                     const CJS_Parameters& params,
                                     CJS_Value& vRet,
                                     CFX_WideString& sError);
@@ skipping 150 matching lines @@
   static FX_BOOL maskSatisfied(wchar_t c_Change, wchar_t c_Mask);
   static FX_BOOL isReservedMaskChar(wchar_t ch);
 
   static double AF_Simple(const FX_WCHAR* sFuction,
                           double dValue1,
                           double dValue2);
   static CJS_Array AF_MakeArrayFromList(v8::Isolate* isolate, CJS_Value val);
 };
 
 #endif  // FPDFSDK_INCLUDE_JAVASCRIPT_PUBLICMETHODS_H_