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 7ed57decd304289eb2127459ebf789b756e71ecd..c868405ca21d418ce027db2ee9e564f3749b9b8d 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(blink::WebInputEvent::Type type);
-
   // TODO(mohsen): There are a bunch of ShouldForward.../ShouldDiscard...
   // methods that are getting confusing. This should be somehow fixed. Maybe
   // while refactoring GEF: http://crbug.com/148443.
@@ -152,11 +150,6 @@ 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);