Introduce isWindowsVistaOrGreater() as replacement of windowsVersion()

Source/core/rendering/RenderThemeChromiumFontProviderWin.cpp

 /*
  * Copyright (C) 2012 Google Inc.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 60 matching lines @@
         else
             pixelsPerInch = 96.0f;
     }
 
     static const float pointsPerInch = 72.0f;
     return points / pointsPerInch * pixelsPerInch;
 }
 
 static void getNonClientMetrics(NONCLIENTMETRICS* metrics)
 {
-    static UINT size = (windowsVersion() >= WindowsVista) ?
+    static UINT size = isWindowsVistaOrGreater() ?
         sizeof(NONCLIENTMETRICS) : NONCLIENTMETRICS_SIZE_PRE_VISTA;
     metrics->cbSize = size;
     bool success = !!SystemParametersInfo(SPI_GETNONCLIENTMETRICS, size, metrics, 0);
     ASSERT(success);
 }
 
 // Return the height of system font |font| in pixels. We use this size by
 // default for some non-form-control elements.
 static float systemFontSize(const LOGFONT& font)
 {
@@ skipping 91 matching lines @@
 // static
 void RenderThemeChromiumFontProvider::setDefaultFontSize(int fontSize)
 {
     s_defaultFontSize = static_cast<float>(fontSize);
 
     // Reset cached fonts.
     smallSystemFont() = menuFont() = labelFont() = FontDescription();
 }
 
 } // namespace WebCore