Events ignoring ack disposition receive synthetic acks.

content/browser/renderer_host/input/gesture_event_filter.h

Index: content/browser/renderer_host/input/gesture_event_filter.h
diff --git a/content/browser/renderer_host/input/gesture_event_filter.h b/content/browser/renderer_host/input/gesture_event_filter.h
index 62949fbb2720457067343d52e5f57b423cff5d2b..f4ea2791e5b6a4f6a753c8d0b5dc3b096df74d01 100644
--- a/content/browser/renderer_host/input/gesture_event_filter.h
+++ b/content/browser/renderer_host/input/gesture_event_filter.h
@@ -93,8 +93,6 @@ class CONTENT_EXPORT GestureEventFilter {
   friend class MockRenderWidgetHost;
   friend class GestureEventFilterTest;
 
-  static bool ShouldIgnoreAckForGestureType(WebKit::WebInputEvent::Type type);
-
   // Returns the last gesture event that was sent to the renderer.
   const GestureEventWithLatencyInfo& GetGestureEventAwaitingAck() const;
 
@@ -155,11 +153,6 @@ class CONTENT_EXPORT GestureEventFilter {
   gfx::Transform GetTransformForEvent(
       const GestureEventWithLatencyInfo& gesture_event) const;
 
-  // Pops and sends events ignoring ack from the head of
-  // |coalesced_gesture_events_| until the queue is empty or the event at the
-  // head requires an ack.
-  void SendEventsIgnoringAck();
-
   // Adds |gesture_event| to the |coalesced_gesture_events_|, resetting the
   // accumulation of |combined_scroll_pinch_|.
   void EnqueueEvent(const GestureEventWithLatencyInfo& gesture_event);