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

Source/core/rendering/svg/RenderSVGRoot.h

Index: Source/core/rendering/svg/RenderSVGRoot.h
diff --git a/Source/core/rendering/svg/RenderSVGRoot.h b/Source/core/rendering/svg/RenderSVGRoot.h
index d5490440eba8e9bc88751f746555d47185206d5d..06b23f53d55c9ff4f3ddc9e91c279d5f0ac399c8 100644
--- a/Source/core/rendering/svg/RenderSVGRoot.h
+++ b/Source/core/rendering/svg/RenderSVGRoot.h
@@ -57,6 +57,12 @@ public:
 
     virtual bool hasRelativeIntrinsicLogicalWidth() const OVERRIDE;
     virtual bool hasRelativeLogicalHeight() const OVERRIDE;
+    virtual bool visibleToHitTestRequest(const HitTestRequest& request) const
+    {
+        if (request.touchAction())
+            return RenderObject::visibleToHitTestRequest(HitTestRequest(request.type() & ~HitTestRequest::TouchAction));
+        return RenderObject::visibleToHitTestRequest(request);
+    }
 
     // localToBorderBoxTransform maps local SVG viewport coordinates to local CSS box coordinates.
     const AffineTransform& localToBorderBoxTransform() const { return m_localToBorderBoxTransform; }