Add hittest mode for Touch-action which ignore inline elements and svg elements

Source/core/rendering/svg/RenderSVGRoot.h

 /*
  * Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2007 Rob Buis <buis@kde.org>
  * Copyright (C) 2009 Google, Inc.  All rights reserved.
  * Copyright (C) 2009 Apple Inc. All rights reserved.
  *
  * 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
  * version 2 of the License, or (at your option) any later version.
@@ skipping 39 matching lines @@
 
     bool isLayoutSizeChanged() const { return m_isLayoutSizeChanged; }
     virtual void setNeedsBoundariesUpdate() OVERRIDE { m_needsBoundariesOrTransformUpdate = true; }
     virtual void setNeedsTransformUpdate() OVERRIDE { m_needsBoundariesOrTransformUpdate = true; }
 
     IntSize containerSize() const { return m_containerSize; }
     void setContainerSize(const IntSize& containerSize) { m_containerSize = containerSize; }
 
     virtual bool hasRelativeIntrinsicLogicalWidth() const OVERRIDE;
     virtual bool hasRelativeLogicalHeight() const OVERRIDE;
+    virtual bool visibleToHitTestRequest(const HitTestRequest& request) const
+    {
+        if (request.touchAction())
+            return style()->visibility() == VISIBLE && style()->pointerEvents() != PE_NONE && !isInert();
+        return RenderObject::visibleToHitTestRequest(request);
+    }
 
     // localToBorderBoxTransform maps local SVG viewport coordinates to local CSS box coordinates.
     const AffineTransform& localToBorderBoxTransform() const { return m_localToBorderBoxTransform; }
 
 private:
     virtual RenderObjectChildList* virtualChildren() OVERRIDE { return children(); }
     virtual const RenderObjectChildList* virtualChildren() const OVERRIDE { return children(); }
 
     virtual const char* renderName() const OVERRIDE { return "RenderSVGRoot"; }
     virtual bool isSVGRoot() const OVERRIDE { return true; }
@@ skipping 44 matching lines @@
     AffineTransform m_localToBorderBoxTransform;
     bool m_isLayoutSizeChanged : 1;
     bool m_needsBoundariesOrTransformUpdate : 1;
 };
 
 DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderSVGRoot, isSVGRoot());
 
 } // namespace WebCore
 
 #endif // RenderSVGRoot_h