Add Chromium-only Blender WebEngine parity work

blender-5.2.0/scripts/freestyle/styles/backbone_stretcher.py

@@ -0,0 +1,28 @@
+# SPDX-FileCopyrightText: 2008-2023 Blender Authors
+#
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+#  Author   : Stephane Grabli
+#  Date     : 04/08/2005
+#  Purpose  : Stretches the geometry of visible lines
+
+from freestyle.chainingiterators import ChainSilhouetteIterator
+from freestyle.predicates import (
+    NotUP1D,
+    QuantitativeInvisibilityUP1D,
+    TrueUP1D,
+)
+from freestyle.shaders import (
+    BackboneStretcherShader,
+    ConstantColorShader,
+)
+from freestyle.types import Operators
+
+
+Operators.select(QuantitativeInvisibilityUP1D(0))
+Operators.bidirectional_chain(ChainSilhouetteIterator(), NotUP1D(QuantitativeInvisibilityUP1D(0)))
+shaders_list = [
+    ConstantColorShader(0.5, 0.5, 0.5),
+    BackboneStretcherShader(20),
+]
+Operators.create(TrueUP1D(), shaders_list)