Bug 1389029 - Create custom change hint and post restyle event for rowspan, colspan attribute changes. r=dbaron

MozReview-Commit-ID: IwUlgDa3DAj

layout/base/nsCSSFrameConstructor.cpp

@@ -9958,6 +9958,21 @@ nsCSSFrameConstructor::MaybeRecreateContainerForFrameRemoval(
   return true;
 }
 
+void
+nsCSSFrameConstructor::UpdateTableCellSpans(nsIContent* aContent)
+{
+  nsTableCellFrame* cellFrame = do_QueryFrame(aContent->GetPrimaryFrame());
+
+  // It's possible that this warning could fire if some other style change
+  // simultaneously changes the 'display' of the element and makes it no
+  // longer be a table cell.
+  NS_WARNING_ASSERTION(cellFrame, "Hint should only be posted on table cells!");
+
+  if (cellFrame) {
+    cellFrame->GetTableFrame()->RowOrColSpanChanged(cellFrame);
+  }
+}
+
 void
 nsCSSFrameConstructor::RecreateFramesForContent(nsIContent* aContent,
                                                 InsertionKind aInsertionKind,