Prototype for the new UI for the Safe Browsing Subresource Filter.

components/subresource_filter/core/browser/subresource_filter_features.cc

Index: components/subresource_filter/core/browser/subresource_filter_features.cc
diff --git a/components/subresource_filter/core/browser/subresource_filter_features.cc b/components/subresource_filter/core/browser/subresource_filter_features.cc
index ef13cad4bc40d508a7c94133d6b34e1fb4a50914..3ba93ca79bf320ef2ea59f1fe414ddabbddc73b0 100644
--- a/components/subresource_filter/core/browser/subresource_filter_features.cc
+++ b/components/subresource_filter/core/browser/subresource_filter_features.cc
@@ -17,6 +17,9 @@ namespace subresource_filter {
 const base::Feature kSafeBrowsingSubresourceFilter{
     "SubresourceFilter", base::FEATURE_DISABLED_BY_DEFAULT};
 
+const base::Feature kSafeBrowsingSubresourceFilterExperimentalUI{
+    "SubresourceFilterExperimentalUI", base::FEATURE_DISABLED_BY_DEFAULT};
+
 // Legacy name `activation_state` is used in variation parameters.
 const char kActivationLevelParameterName[] = "activation_state";
 const char kActivationLevelDryRun[] = "dryrun";