Bug 1162050 - Remove use of eLegacyDragGesture from EventStateManager.cpp. r=enn

MozReview-Commit-ID: F4a52Yw5ri3

--HG--
extra : rebase_source : cfa72993e938fdd36e56f7f6d0e2cb5f065b5559

dom/events/EventStateManager.cpp

@@ -702,7 +702,7 @@ EventStateManager::PreHandleEvent(nsPresContext* aPresContext,
     FlushPendingEvents(aPresContext);
     break;
   }
-  case eLegacyDragGesture:
+  case eDragStart:
     if (Prefs::ClickHoldContextMenu()) {
       // an external drag gesture event came in, not generated internally
       // by Gecko. Make sure we get rid of the click-hold timer.
@@ -1766,12 +1766,8 @@ EventStateManager::GenerateDragGesture(nsPresContext* aPresContext,
       WidgetDragEvent startEvent(aEvent->IsTrusted(), eDragStart, widget);
       FillInEventFromGestureDown(&startEvent);
 
-      WidgetDragEvent gestureEvent(aEvent->IsTrusted(),
-                                   eLegacyDragGesture, widget);
-      FillInEventFromGestureDown(&gestureEvent);
-
-      startEvent.mDataTransfer = gestureEvent.mDataTransfer = dataTransfer;
-      startEvent.inputSource = gestureEvent.inputSource = aEvent->inputSource;
+      startEvent.mDataTransfer = dataTransfer;
+      startEvent.inputSource = aEvent->inputSource;
 
       // Dispatch to the DOM. By setting mCurrentTarget we are faking
       // out the ESM and telling it that the current target frame is
@@ -1796,12 +1792,6 @@ EventStateManager::GenerateDragGesture(nsPresContext* aPresContext,
                                 nullptr, &status);
 
       WidgetDragEvent* event = &startEvent;
-      if (status != nsEventStatus_eConsumeNoDefault) {
-        status = nsEventStatus_eIgnore;
-        EventDispatcher::Dispatch(targetContent, aPresContext, &gestureEvent,
-                                  nullptr, &status);
-        event = &gestureEvent;
-      }
 
       nsCOMPtr<nsIObserverService> observerService =
         mozilla::services::GetObserverService();