Virtual test suites for slimming paint phase 2

Source/core/layout/compositing/DeprecatedPaintLayerCompositor.cpp

Index: Source/core/layout/compositing/DeprecatedPaintLayerCompositor.cpp
diff --git a/Source/core/layout/compositing/DeprecatedPaintLayerCompositor.cpp b/Source/core/layout/compositing/DeprecatedPaintLayerCompositor.cpp
index 0758e5f999cbdd82c45d3a0eee9c16c83beb3b02..53657cedd899cc8ab4f52e093fa34c4a0a19b8e6 100644
--- a/Source/core/layout/compositing/DeprecatedPaintLayerCompositor.cpp
+++ b/Source/core/layout/compositing/DeprecatedPaintLayerCompositor.cpp
@@ -878,9 +878,16 @@ void DeprecatedPaintLayerCompositor::resetTrackedPaintInvalidationRects()
 
 void DeprecatedPaintLayerCompositor::setTracksPaintInvalidations(bool tracksPaintInvalidations)
 {
-    ASSERT(lifecycle().state() ==
-        (RuntimeEnabledFeatures::slimmingPaintV2Enabled()
-            ? DocumentLifecycle::CompositingForSlimmingPaintV2Clean : DocumentLifecycle::PaintInvalidationClean));
+#if ENABLE(ASSERT)
+    if (RuntimeEnabledFeatures::slimmingPaintV2Enabled()) {
+        ASSERT(lifecycle().state() == DocumentLifecycle::CompositingForSlimmingPaintV2Clean
+            // TODO(wangxianzhu): Remove this when we remove the old path for spv2.
+            || lifecycle().state() == DocumentLifecycle::PaintInvalidationClean);
+    } else {
+        ASSERT(lifecycle().state() == DocumentLifecycle::PaintInvalidationClean);
+    }
+#endif
+
     m_isTrackingPaintInvalidations = tracksPaintInvalidations;
 }