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 b334d5b2bc9423b05c9d96b3bb40ca12bf0fc6c0..d5c2c50b54fefbec627d98618ac0c9cb98d13ec9 100644
--- a/content/child/runtime_features.cc
+++ b/content/child/runtime_features.cc
@@ -376,6 +376,11 @@ void SetRuntimeFeaturesDefaultsAndUpdateFromArgs(
                                                 false);
   }
 
+  WebRuntimeFeatures::EnableFeatureFromString(
+      "AllowContentInitiatedDataUrlNavigations",
+      base::FeatureList::IsEnabled(
+          features::kAllowContentInitiatedDataUrlNavigations));
+
   // Enable explicitly enabled features, and then disable explicitly disabled
   // ones.
   if (command_line.HasSwitch(switches::kEnableBlinkFeatures)) {