Make touch events uncancelable during fling when they are on the current active scroll layer

cc/trees/layer_tree_host_impl.h

Index: cc/trees/layer_tree_host_impl.h
diff --git a/cc/trees/layer_tree_host_impl.h b/cc/trees/layer_tree_host_impl.h
index ca666bf55773499210d2d1d45cf8ee751b6d3266..1531d4532e6fbcf1eb40124e3ac0afc8dd612397 100644
--- a/cc/trees/layer_tree_host_impl.h
+++ b/cc/trees/layer_tree_host_impl.h
@@ -195,7 +195,8 @@ class CC_EXPORT LayerTreeHostImpl
       InputHandler::ScrollInputType type) const override;
   EventListenerProperties GetEventListenerProperties(
       EventListenerClass event_class) const override;
-  bool DoTouchEventsBlockScrollAt(const gfx::Point& viewport_port) override;
+  EventListenerProperties EventListenerTypeForTouchStartAt(
+      const gfx::Point& viewport_port) override;
   std::unique_ptr<SwapPromiseMonitor> CreateLatencyInfoSwapPromiseMonitor(
       ui::LatencyInfo* latency) override;
   ScrollElasticityHelper* CreateScrollElasticityHelper() override;