Initial touch-action main thread implementation

Source/core/page/EventHandler.h

Index: Source/core/page/EventHandler.h
diff --git a/Source/core/page/EventHandler.h b/Source/core/page/EventHandler.h
index afd790377d8081f620962c90259b805c285ff057..5849e37f5bf076f199bc3e8b5f2d6fecdc9c839b 100644
--- a/Source/core/page/EventHandler.h
+++ b/Source/core/page/EventHandler.h
@@ -32,6 +32,7 @@
 #include "core/page/FocusDirection.h"
 #include "core/platform/Cursor.h"
 #include "core/rendering/HitTestRequest.h"
+#include "core/rendering/style/RenderStyleConstants.h"
 #include "platform/PlatformMouseEvent.h"
 #include "platform/Timer.h"
 #include "platform/UserGestureIndicator.h"
@@ -232,6 +233,8 @@ private:
     ScrollableArea* associatedScrollableArea(const RenderLayer*) const;
 
     bool dispatchSyntheticTouchEventIfEnabled(const PlatformMouseEvent&);
+    TouchAction computeEffectiveTouchAction(const Node&);
+
     bool handleMouseEventAsEmulatedGesture(const PlatformMouseEvent&);
     bool handleWheelEventAsEmulatedGesture(const PlatformWheelEvent&);
     HitTestResult hitTestResultInFrame(Frame*, const LayoutPoint&, HitTestRequest::HitTestRequestType hitType = HitTestRequest::ReadOnly | HitTestRequest::Active | HitTestRequest::ConfusingAndOftenMisusedDisallowShadowContent);