Bug 1342867 - Label the runnable of ScrollOnFocusEvent. r=bevistseng,dholbert

MozReview-Commit-ID: Dwk7F0gQBiz

--HG--
extra : rebase_source : 325f4557be0a7fcc0c5dc7c423ed3d9246bea7fa

layout/forms/nsTextControlFrame.cpp

@@ -675,7 +675,9 @@ void nsTextControlFrame::SetFocus(bool aOn, bool aRepaint)
     }
     if (!(lastFocusMethod & nsIFocusManager::FLAG_BYMOUSE)) {
       RefPtr<ScrollOnFocusEvent> event = new ScrollOnFocusEvent(this);
-      nsresult rv = NS_DispatchToCurrentThread(event);
+      nsresult rv = mContent->OwnerDoc()->Dispatch("ScrollOnFocusEvent",
+                                                   TaskCategory::Other,
+                                                   do_AddRef(event));
       if (NS_SUCCEEDED(rv)) {
         mScrollEvent = event;
       }