Suppress layer creation for descendants of GPU-rasterized layers

Source/core/rendering/compositing/CompositedLayerMapping.cpp

Index: Source/core/rendering/compositing/CompositedLayerMapping.cpp
diff --git a/Source/core/rendering/compositing/CompositedLayerMapping.cpp b/Source/core/rendering/compositing/CompositedLayerMapping.cpp
index c32b624d46060808561961fc75858a02a3282ade..bcb3769553ad2896785f55e39ae9ed34181c772f 100644
--- a/Source/core/rendering/compositing/CompositedLayerMapping.cpp
+++ b/Source/core/rendering/compositing/CompositedLayerMapping.cpp
@@ -183,6 +183,9 @@ CompositedLayerMapping::CompositedLayerMapping(RenderLayer& layer)
 
 CompositedLayerMapping::~CompositedLayerMapping()
 {
+    // Hits in compositing/squashing/squash-onto-nephew.html.
+    DisableCompositingQueryAsserts disabler;
+
     // Do not leave the destroyed pointer dangling on any RenderLayers that painted to this mapping's squashing layer.
     for (size_t i = 0; i < m_squashedLayers.size(); ++i) {
         RenderLayer* oldSquashedLayer = m_squashedLayers[i].renderLayer;