[WIP2] off-main-thread loading

content/public/common/content_features.cc

Index: content/public/common/content_features.cc
diff --git a/content/public/common/content_features.cc b/content/public/common/content_features.cc
index a35805dcfd95b1eaba8f33b554bf2756e1983728..e2332b6819c9e9df6bed68697021268bde68de7e 100644
--- a/content/public/common/content_features.cc
+++ b/content/public/common/content_features.cc
@@ -150,8 +150,10 @@ const base::Feature kMainThreadBusyScrollIntervention{
     "MainThreadBusyScrollIntervention", base::FEATURE_DISABLED_BY_DEFAULT};
 
 // Experimental resource fetch optimizations for workers. See crbug.com/443374
+// TODO(horo): This must be DISABLED_BY_DEFAULT for the production patch. We use
+// DISABLED_BY_DEFAULT only for the POC patch.
 const base::Feature kOffMainThreadFetch{"OffMainThreadFetch",
-                                        base::FEATURE_DISABLED_BY_DEFAULT};
+                                        base::FEATURE_ENABLED_BY_DEFAULT};
 
 // Origin Trials for controlling access to feature/API experiments.
 const base::Feature kOriginTrials{"OriginTrials",