add pan-x and pan-y support to CSS touch-action parsing.

Source/core/rendering/style/StyleRareNonInheritedData.h

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 15 matching lines @@
 #define StyleRareNonInheritedData_h
 
 #include "core/rendering/ClipPathOperation.h"
 #include "core/rendering/style/BasicShapes.h"
 #include "core/rendering/style/CounterDirectives.h"
 #include "core/rendering/style/CursorData.h"
 #include "core/rendering/style/DataRef.h"
 #include "core/rendering/style/FillLayer.h"
 #include "core/rendering/style/LineClampValue.h"
 #include "core/rendering/style/NinePieceImage.h"
+#include "core/rendering/style/RenderStyleConstants.h"
 #include "core/rendering/style/ShapeValue.h"
 #include "platform/LengthPoint.h"
 #include "wtf/OwnPtr.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/Vector.h"
 
 namespace WebCore {
 
 class ContentData;
 class CSSAnimationDataList;
@@ skipping 131 matching lines @@
     unsigned m_textDecorationStyle : 3; // TextDecorationStyle
     unsigned m_wrapFlow: 3; // WrapFlow
     unsigned m_wrapThrough: 1; // WrapThrough
 
     unsigned m_runningAcceleratedAnimation : 1;
 
     unsigned m_hasAspectRatio : 1; // Whether or not an aspect ratio has been specified.
 
     unsigned m_effectiveBlendMode: 5; // EBlendMode
 
-    unsigned m_touchAction : 1; // TouchAction
+    unsigned m_touchAction : TouchActionBits; // TouchAction

[eseidel, 2013/12/13 17:19:06]

Is this object specially sized?  Do we need to update the count of free bits?

[Rick Byers, 2013/12/13 21:16:15]

No I think it's just packed as tightly as possible.  I didn't have to do
anything special when I first added m_touchAction as a single bit.

 
     unsigned m_objectFit : 3; // ObjectFit
 
     unsigned m_isolation : 1; // Isolation
 
 private:
     StyleRareNonInheritedData();
     StyleRareNonInheritedData(const StyleRareNonInheritedData&);
 };
 
 } // namespace WebCore
 
 #endif // StyleRareNonInheritedData_h