Subtree caching implementation in blink-core

Source/core/layout/LayoutObject.cpp

Index: Source/core/layout/LayoutObject.cpp
diff --git a/Source/core/layout/LayoutObject.cpp b/Source/core/layout/LayoutObject.cpp
index 6ddea1c970ff66b203ede634690f88b51eb529ca..594aaed22574607280da4a691240430b98a21fc8 100644
--- a/Source/core/layout/LayoutObject.cpp
+++ b/Source/core/layout/LayoutObject.cpp
@@ -1183,6 +1183,9 @@ void LayoutObject::invalidateDisplayItemClients(const LayoutBoxModelObject& pain
 {
     ASSERT(RuntimeEnabledFeatures::slimmingPaintEnabled());
     paintInvalidationContainer.invalidateDisplayItemClientOnBacking(*this);
+
+    if (RuntimeEnabledFeatures::slimmingPaintV2Enabled())
+        enclosingLayer()->setNeedsRepaint();
 }
 
 LayoutRect LayoutObject::boundsRectForPaintInvalidation(const LayoutBoxModelObject* paintInvalidationContainer, const PaintInvalidationState* paintInvalidationState) const