Bug 1140625 - Part 5: Move Flush_Layout to the right place in SelectionCarets::UpdateSelectionCarets. r=roc

layout/base/SelectionCarets.cpp

@@ -462,6 +462,8 @@ SelectionCarets::UpdateSelectionCarets()
   nsRefPtr<nsRange> firstRange = selection->GetRangeAt(0);
   nsRefPtr<nsRange> lastRange = selection->GetRangeAt(rangeCount - 1);
 
+  mPresShell->FlushPendingNotifications(Flush_Layout);
+
   nsIFrame* rootFrame = mPresShell->GetRootFrame();
 
   if (!rootFrame) {
@@ -495,8 +497,6 @@ SelectionCarets::UpdateSelectionCarets()
     return;
   }
 
-  mPresShell->FlushPendingNotifications(Flush_Layout);
-
   // If the selection is not visible, we should dispatch a event.
   nsIFrame* commonAncestorFrame =
     nsLayoutUtils::FindNearestCommonAncestorFrame(startFrame, endFrame);