RenderLayerCompositor::recursiveRepaintLayer needs to updateLayerListsIfNeeded

This function is iterating the stacking tree. It needs to ensure that the
stacking tree is up-to-date.

TBR=esprehn@chromium.org

Review URL: https://codereview.chromium.org/331923002

git-svn-id: svn://svn.chromium.org/blink/trunk@176119 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/Source/core/rendering/compositing/RenderLayerCompositor.cpp

@@ -672,6 +672,8 @@ void RenderLayerCompositor::recursiveRepaintLayer(RenderLayer* layer)
     if (layer->compositingState() == PaintsIntoOwnBacking)
         layer->repainter().setBackingNeedsRepaint();
 
+    layer->stackingNode()->updateLayerListsIfNeeded();
+
 #if ASSERT_ENABLED
     LayerListMutationDetector mutationChecker(layer->stackingNode());
 #endif