Allow parsing of custom window features, such as 'moo=foo'.

Source/core/page/WindowFeatures.cpp

 /*
  *  Copyright (C) 2000 Harri Porten (porten@kde.org)
  *  Copyright (C) 2006 Jon Shier (jshier@iastate.edu)
  *  Copyright (C) 2003, 2004, 2005, 2006, 2007, 2010 Apple Inc. All rights reseved.
  *  Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  *
  *  This library is free software; you can redistribute it and/or
  *  modify it under the terms of the GNU Lesser General Public
  *  License as published by the Free Software Foundation; either
  *  version 2 of the License, or (at your option) any later version.
@@ skipping 138 matching lines @@
     else if (keyString == "toolbar")
         toolBarVisible = value;
     else if (keyString == "location")
         locationBarVisible = value;
     else if (keyString == "status")
         statusBarVisible = value;
     else if (keyString == "fullscreen")
         fullscreen = value;
     else if (keyString == "scrollbars")
         scrollbarsVisible = value;
-    else if (value == 1)
-        additionalFeatures.append(keyString);
+    else {
+        // We're dealing with an unknown key, so just pass it on for processing
+        // at a later time.
+        String keyValueStr = keyString;
+        if (!valueString.isEmpty())
+            keyValueStr.append("=" + valueString);
+
+        additionalFeatures.append(keyValueStr);
+    }
 }
 
 WindowFeatures::WindowFeatures(const String& dialogFeaturesString, const FloatRect& screenAvailableRect)
     : widthSet(true)
     , heightSet(true)
     , menuBarVisible(false)
     , toolBarVisible(false)
     , locationBarVisible(false)
     , fullscreen(false)
     , dialog(true)
@@ skipping 85 matching lines @@
         if (separatorPosition != notFound) {
             value = featureString.substring(separatorPosition + 1).stripWhiteSpace().lower();
             value = value.left(value.find(' '));
         }
 
         map.set(key, value);
     }
 }
 
 } // namespace WebCore