[SPInvaldation] Update subtree paint properties when a layout subtree is inserted

third_party/WebKit/Source/core/paint/FindPropertiesNeedingUpdate.h

Index: third_party/WebKit/Source/core/paint/FindPropertiesNeedingUpdate.h
diff --git a/third_party/WebKit/Source/core/paint/FindPropertiesNeedingUpdate.h b/third_party/WebKit/Source/core/paint/FindPropertiesNeedingUpdate.h
index a6dbeef959637a390f283a11b02b792f5b4f23bd..a1578ca5d9c1e4e087a1cbe7028f8aa0fe07560a 100644
--- a/third_party/WebKit/Source/core/paint/FindPropertiesNeedingUpdate.h
+++ b/third_party/WebKit/Source/core/paint/FindPropertiesNeedingUpdate.h
@@ -116,7 +116,7 @@ class FindObjectPropertiesNeedingUpdateScope {
       return;
 
     // Mark the properties as needing an update to ensure they are rebuilt.
-    const_cast<LayoutObject&>(m_object)
+    m_object.getMutableForPainting()
         .setOnlyThisNeedsPaintPropertyUpdateForTesting();
 
     if (const auto* properties = m_object.paintProperties())
@@ -193,7 +193,7 @@ class FindObjectPropertiesNeedingUpdateScope {
       DCHECK_EQ(!!m_originalProperties, !!objectProperties);
     }
     // Restore original clean bit.
-    const_cast<LayoutObject&>(m_object).clearNeedsPaintPropertyUpdate();
+    m_object.getMutableForPainting().clearNeedsPaintPropertyUpdateForTesting();
   }
 
  private: