Block renderer-initiated main frame navigations to data URLs

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 b783df3bdd63ad83df54c5ef83fcb5d74ad293b0..b6c0c59066d276379093f6c0a44c1325e43314e7 100644
--- a/content/child/runtime_features.cc
+++ b/content/child/runtime_features.cc
@@ -371,6 +371,10 @@ void SetRuntimeFeaturesDefaultsAndUpdateFromArgs(
                                                 false);
   }
 
+  WebRuntimeFeatures::enableFeatureFromString(
+      "AllowInsecureDataUrlNavigations",
+      base::FeatureList::IsEnabled(features::kAllowInsecureDataUrlNavigations));
+
   // Enable explicitly enabled features, and then disable explicitly disabled
   // ones.
   if (command_line.HasSwitch(switches::kEnableBlinkFeatures)) {