Initial support for experimental touch-action CSS feature

Source/core/css/CSSParserMode.h

 /*
  * Copyright (C) 2012 Adobe Systems Incorporated. All rights reserved.
  * Copyright (C) 2012 Apple 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
@@ skipping 51 matching lines @@
 
     KURL baseURL;
     String charset;
     CSSParserMode mode;
     bool isHTMLDocument;
     bool isCSSCustomFilterEnabled;
     bool isCSSStickyPositionEnabled;
     bool isCSSCompositingEnabled;
     bool isCSSGridLayoutEnabled;
     bool isCSSVariablesEnabled;
+    bool isCSSTouchActionEnabled;

[eseidel, 2013/05/24 20:24:33]

I think CSSParserMode is an older way of doing runtime enables like this.  But
it's  possible it still serves a use.

     bool needsSiteSpecificQuirks;
 };
 
 bool operator==(const CSSParserContext&, const CSSParserContext&);
 inline bool operator!=(const CSSParserContext& a, const CSSParserContext& b) { return !(a == b); }
 
 const CSSParserContext& strictCSSParserContext();
 
 };
 
 #endif // CSSParserMode_h