Implement incremental paint property tree rebuilding

third_party/WebKit/Source/core/layout/LayoutObject.cpp

Index: third_party/WebKit/Source/core/layout/LayoutObject.cpp
diff --git a/third_party/WebKit/Source/core/layout/LayoutObject.cpp b/third_party/WebKit/Source/core/layout/LayoutObject.cpp
index 0ae7cb6b3efb9b4e07af42ed1c3f3672c0230d8b..71263e01fbfd9ce453eef51b65d986df49661eab 100644
--- a/third_party/WebKit/Source/core/layout/LayoutObject.cpp
+++ b/third_party/WebKit/Source/core/layout/LayoutObject.cpp
@@ -1478,6 +1478,8 @@ StyleDifference LayoutObject::adjustStyleDifference(
       // for changed paint property or paint order. Raster invalidation will be
       // issued if needed during paint.
       ObjectPaintInvalidator(*this).slowSetPaintingLayerNeedsRepaint();
+
+      getMutableForPainting().setPaintPropertiesInvalid();
     }
   } else {
     // If transform changed, and the layer does not paint into its own separate