Remove redundant ifdef in FontPlatformDataWin.cpp

Source/platform/fonts/win/FontPlatformDataWin.cpp

 /*
  * Copyright (C) 2006, 2007 Apple Computer, Inc.
  * Copyright (c) 2006, 2007, 2008, 2009, 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 336 matching lines @@
 {
     blink::WebSandboxSupport* sandboxSupport = blink::Platform::current()->sandboxSupport();
     // if there is no sandbox, then we can assume the font
     // was able to be loaded successfully already
     return sandboxSupport ? sandboxSupport->ensureFontLoaded(font) : true;
 }
 #endif
 
 bool FontPlatformData::defaultUseSubpixelPositioning()
 {
-#if OS(WIN)
     return FontCache::fontCache()->useSubpixelPositioning();
-#else
-    return false;
-#endif
 }
 
 #ifndef NDEBUG
 String FontPlatformData::description() const
 {
     return String();
 }
 #endif
 
 } // namespace WebCore