Bug 1697979 - Part 1: Reuse previously built stacking context display items without merging r=mstange

Differential Revision: https://phabricator.services.mozilla.com/D128413

layout/tables/nsTableRowFrame.cpp

@@ -1388,8 +1388,9 @@ void nsTableRowFrame::InvalidateFrame(uint32_t aDisplayItemKey,
                                       bool aRebuildDisplayItems) {
   nsIFrame::InvalidateFrame(aDisplayItemKey, aRebuildDisplayItems);
   if (GetTableFrame()->IsBorderCollapse()) {
+    const bool rebuild = StaticPrefs::layout_display_list_retain_sc();
     GetParent()->InvalidateFrameWithRect(InkOverflowRect() + GetPosition(),
-                                         aDisplayItemKey, false);
+                                         aDisplayItemKey, rebuild);
   }
 }
 
@@ -1402,7 +1403,7 @@ void nsTableRowFrame::InvalidateFrameWithRect(const nsRect& aRect,
   // we get an inactive layer created and this is computed
   // within FrameLayerBuilder
   GetParent()->InvalidateFrameWithRect(aRect + GetPosition(), aDisplayItemKey,
-                                       false);
+                                       aRebuildDisplayItems);
 }
 
 /* ----- global methods ----- */