Remove is_fling flag for fling intervention

content/renderer/input/main_thread_event_queue.h

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_RENDERER_INPUT_MAIN_THREAD_EVENT_QUEUE_H_
 #define CONTENT_RENDERER_INPUT_MAIN_THREAD_EVENT_QUEUE_H_
 
 #include <deque>
 #include "base/feature_list.h"
 #include "content/common/content_export.h"
@@ skipping 109 matching lines @@
                    const ui::LatencyInfo& latency,
                    InputEventDispatchType dispatch_type,
                    InputEventAckState ack_result);
   void DispatchRafAlignedInput();
 
   // Call once the main thread has handled an outstanding |type| event
   // in flight.
   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();
   void QueueEvent(std::unique_ptr<EventWithDispatchType> event);
   void SendEventNotificationToMainThread();
   void DispatchSingleEvent();
   void DispatchInFlightEvent();
   void PossiblyScheduleMainFrame();
 
   void SendEventToMainThread(const blink::WebInputEvent* event,
                              const ui::LatencyInfo& latency,
                              InputEventDispatchType original_dispatch_type);
 
   bool IsRafAlignedInputDisabled();
   bool IsRafAlignedEvent(const std::unique_ptr<EventWithDispatchType>& event);
 
   friend class MainThreadEventQueueTest;
   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_;
   bool handle_raf_aligned_mouse_input_;
 
   // Contains data to be shared between main thread and compositor thread.
   struct SharedState {
     SharedState();
     ~SharedState();
 
     WebInputEventQueue<EventWithDispatchType> events_;
     bool sent_main_frame_request_;
   };
 
   // Lock used to serialize |shared_state_|.
   base::Lock shared_state_lock_;
   SharedState shared_state_;
 
   scoped_refptr<base::SingleThreadTaskRunner> main_task_runner_;
   blink::scheduler::RendererScheduler* renderer_scheduler_;
 
   DISALLOW_COPY_AND_ASSIGN(MainThreadEventQueue);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_INPUT_MAIN_THREAD_EVENT_QUEUE_H_