List marker pseudo elements.

Source/core/layout/LayoutObjectChildList.cpp

 /*
  * Copyright (C) 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 10 matching lines @@
  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "core/layout/LayoutObjectChildList.h"
 
 #include "core/dom/AXObjectCache.h"
+#include "core/dom/MarkerPseudoElement.h"
 #include "core/layout/LayoutCounter.h"
 #include "core/layout/LayoutObject.h"
 #include "core/layout/LayoutView.h"
 #include "core/style/ComputedStyle.h"
 #include "core/paint/DeprecatedPaintLayer.h"
 
 namespace blink {
 
 void LayoutObjectChildList::destroyLeftoverChildren()
 {
     while (firstChild()) {
-        // List markers are owned by their enclosing list and so don't get destroyed by this container.
-        if (firstChild()->isListMarker()) {
-            firstChild()->remove();
-            continue;
+        if (!RuntimeEnabledFeatures::listMarkerPseudoElementEnabled()) {
+            // List markers are owned by their enclosing list and so don't get destroyed by this container.
+            if (firstChild()->isListMarker()) {
+                firstChild()->remove();
+                continue;
+            }
         }
 
         // Destroy any anonymous children remaining in the render tree, as well as implicit (shadow) DOM elements like those used in the engine-based text fields.
         if (firstChild()->node())
             firstChild()->node()->setLayoutObject(nullptr);
         firstChild()->destroy();
     }
 }
 
 LayoutObject* LayoutObjectChildList::removeChildNode(LayoutObject* owner, LayoutObject* oldChild, bool notifyRenderer)
@@ skipping 121 matching lines @@
     DisableCompositingQueryAsserts disabler;
     // FIXME: We should not allow paint invalidation out of paint invalidation state. crbug.com/457415
     DisablePaintInvalidationStateAsserts paintInvalidationAssertDisabler;
     const LayoutBoxModelObject* paintInvalidationContainer = oldChild.containerForPaintInvalidation();
     oldChild.invalidatePaintUsingContainer(paintInvalidationContainer, oldChild.previousPaintInvalidationRect(), PaintInvalidationRendererRemoval);
     if (RuntimeEnabledFeatures::slimmingPaintEnabled())
         oldChild.invalidateDisplayItemClients(*paintInvalidationContainer);
 }
 
 } // namespace blink