(NOT FOR REVIEW) Distinguish between touch and touchmove handler presence

Source/core/loader/EmptyClients.h

Index: Source/core/loader/EmptyClients.h
diff --git a/Source/core/loader/EmptyClients.h b/Source/core/loader/EmptyClients.h
index 463f2b6873c259503affa4c701e41e6e926493ee..1295140db888b8efb8e55cf10831229162fd4ebb 100644
--- a/Source/core/loader/EmptyClients.h
+++ b/Source/core/loader/EmptyClients.h
@@ -152,6 +152,7 @@ public:
     void attachRootGraphicsLayer(GraphicsLayer*, LocalFrame* localRoot) override {}
 
     void needTouchEvents(bool) override {}
+    void needTouchMoveEvents(bool) override {}
     void setTouchAction(TouchAction) override {}
 
     void didAssociateFormControls(const WillBeHeapVector<RefPtrWillBeMember<Element>>&, LocalFrame*) override {}