Basic support for backface visibility in spv2 with --layer-lists

third_party/WebKit/Source/platform/graphics/compositing/PaintArtifactCompositor.cpp

Index: third_party/WebKit/Source/platform/graphics/compositing/PaintArtifactCompositor.cpp
diff --git a/third_party/WebKit/Source/platform/graphics/compositing/PaintArtifactCompositor.cpp b/third_party/WebKit/Source/platform/graphics/compositing/PaintArtifactCompositor.cpp
index da3c47056d82795de41e10be38b9c866c35d6033..08926a77d196ec8d6960a495442fe5d75524d47d 100644
--- a/third_party/WebKit/Source/platform/graphics/compositing/PaintArtifactCompositor.cpp
+++ b/third_party/WebKit/Source/platform/graphics/compositing/PaintArtifactCompositor.cpp
@@ -591,6 +591,8 @@ void PaintArtifactCompositor::updateInLayerListMode(const PaintArtifact& paintAr
         // queried by RenderSurfaceImpl.
         layer->Set3dSortingContextId(host->property_trees()->transform_tree.Node(transformId)->sorting_context_id);
 
+        layer->SetShouldCheckBackfaceVisibility(paintChunk.properties.backfaceHidden);
+
         if (m_extraDataForTestingEnabled)
             m_extraDataForTesting->contentLayers.append(layer);
     }