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

content/renderer/input/main_thread_event_queue.h

Index: content/renderer/input/main_thread_event_queue.h
diff --git a/content/renderer/input/main_thread_event_queue.h b/content/renderer/input/main_thread_event_queue.h
index d92537da887a1a8a14aece1bbd90e341c43e2765..9852b3ddf9a8c1beeba9eb544bec5283b3c60a0c 100644
--- a/content/renderer/input/main_thread_event_queue.h
+++ b/content/renderer/input/main_thread_event_queue.h
@@ -127,8 +127,6 @@ class CONTENT_EXPORT MainThreadEventQueue
   void EventHandled(blink::WebInputEvent::Type type,
                     InputEventAckState ack_result);
 
-  void set_is_flinging(bool is_flinging) { is_flinging_ = is_flinging; }
-
  private:
   friend class base::RefCountedThreadSafe<MainThreadEventQueue>;
   ~MainThreadEventQueue();
@@ -149,7 +147,6 @@ class CONTENT_EXPORT MainThreadEventQueue
   int routing_id_;
   MainThreadEventQueueClient* client_;
   std::unique_ptr<EventWithDispatchType> in_flight_event_;
-  bool is_flinging_;
   bool last_touch_start_forced_nonblocking_due_to_fling_;
   bool enable_fling_passive_listener_flag_;
   bool handle_raf_aligned_touch_input_;