Add runtime feature SlimmingPaintInvalidation

content/child/runtime_features.cc

Index: content/child/runtime_features.cc
diff --git a/content/child/runtime_features.cc b/content/child/runtime_features.cc
index 1fcfb01642eee6d84748e2f6dee1c2f3a1a023cb..5fbf13148e33c3c140f8736f6eeef85871f2edee 100644
--- a/content/child/runtime_features.cc
+++ b/content/child/runtime_features.cc
@@ -254,6 +254,9 @@ void SetRuntimeFeaturesDefaultsAndUpdateFromArgs(
   if (command_line.HasSwitch(switches::kEnableSlimmingPaintV2))
     WebRuntimeFeatures::enableSlimmingPaintV2(true);
 
+  if (base::FeatureList::IsEnabled(features::kSlimmingPaintInvalidation))
+    WebRuntimeFeatures::enableSlimmingPaintInvalidation(true);
+
   if (command_line.HasSwitch(switches::kEnableSlimmingPaintInvalidation))
     WebRuntimeFeatures::enableSlimmingPaintInvalidation(true);