Send early ShowPress on TapDown when page isn't scrollable/pinchable.

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 0de3be6c7595b8bc18294b4ddd5ca65bfb6feecb..b965c7838668c61dc1829bea4b2d0a17bf731b35 100644
--- a/Source/core/page/EventHandler.h
+++ b/Source/core/page/EventHandler.h
@@ -177,6 +177,9 @@ public:
 
     void notifyElementActivated();
 
+    Frame* frameForGestureEvent(const PlatformGestureEvent&, IntPoint& adjustedPoint);
+
+    bool hasScrollableAncestor(const Node*) const;
 private:
     static DragState& dragState();
 
@@ -305,7 +308,6 @@ private:
     bool passGestureEventToWidget(const PlatformGestureEvent&, Widget*);
     bool passGestureEventToWidgetIfPossible(const PlatformGestureEvent&, RenderObject*);
     bool sendScrollEventToView(const PlatformGestureEvent&, const FloatSize&);
-    Frame* getSubFrameForGestureEvent(const IntPoint& touchAdjustedPoint, const PlatformGestureEvent&);
 
     AutoscrollController* autoscrollController() const;
     bool panScrollInProgress() const;