Use override in more classes in fpdfsdk/

fpdfsdk/src/javascript/color.cpp

 // 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
 
 #include "../../include/javascript/JavaScript.h"
 #include "../../include/javascript/IJavaScript.h"
 #include "../../include/javascript/JS_Define.h"
 #include "../../include/javascript/JS_Object.h"
@@ skipping 47 matching lines @@
   m_crGreen = CPWL_Color(COLORTYPE_RGB, 0, 1, 0);
   m_crBlue = CPWL_Color(COLORTYPE_RGB, 0, 0, 1);
   m_crCyan = CPWL_Color(COLORTYPE_CMYK, 1, 0, 0, 0);
   m_crMagenta = CPWL_Color(COLORTYPE_CMYK, 0, 1, 0, 0);
   m_crYellow = CPWL_Color(COLORTYPE_CMYK, 0, 0, 1, 0);
   m_crDKGray = CPWL_Color(COLORTYPE_GRAY, 0.25);
   m_crGray = CPWL_Color(COLORTYPE_GRAY, 0.5);
   m_crLTGray = CPWL_Color(COLORTYPE_GRAY, 0.75);
 }
 
-color::~color(void) {}
+color::~color() {
+}
 
 void color::ConvertPWLColorToArray(const CPWL_Color& color, CJS_Array& array) {
   switch (color.nColorType) {
     case COLORTYPE_TRANSPARENT:
       array.SetElement(0, CJS_Value(array.GetIsolate(), "T"));
       break;
     case COLORTYPE_GRAY:
       array.SetElement(0, CJS_Value(array.GetIsolate(), "G"));
       array.SetElement(1, CJS_Value(array.GetIsolate(), color.fColor1));
       break;
@@ skipping 146 matching lines @@
   CPWL_Color color2;
 
   ConvertArrayToPWLColor(array1, color1);
   ConvertArrayToPWLColor(array2, color2);
 
   color1.ConvertColorType(color2.nColorType);
 
   vRet = color1 == color2;
   return TRUE;
 }