diff --git a/netwerk/url-classifier/nsIURIClassifier.idl b/netwerk/url-classifier/nsIURIClassifier.idl
index 08563aadbb5d..497b32f7ff5a 100644
--- a/netwerk/url-classifier/nsIURIClassifier.idl
+++ b/netwerk/url-classifier/nsIURIClassifier.idl
@@ -84,7 +84,6 @@ interface nsIURIClassifier : nsISupports
    * Asynchronously classify a URI with list of features. This does not make
    * network requests. This takes a list of names so it can safely be called in
    * the content process.
-   * This is content process only, and will ASSERT otherwise.
    */
   void asyncClassifyLocalWithFeatureNames(in nsIURI aURI,
                                       in Array<ACString> aFeatures,
diff --git a/toolkit/components/antitracking/StorageAccessAPIHelper.cpp b/toolkit/components/antitracking/StorageAccessAPIHelper.cpp
index f34725974151..6baa4cdce862 100644
--- a/toolkit/components/antitracking/StorageAccessAPIHelper.cpp
+++ b/toolkit/components/antitracking/StorageAccessAPIHelper.cpp
@@ -1340,6 +1340,7 @@ void StorageAccessGrantTelemetryClassification::MaybeReportTracker(
 
   rv = uriClassifier->AsyncClassifyLocalWithFeatureNames(
       aURI, featureNames, nsIUrlClassifierFeature::blocklist, classification);
+  Unused << NS_WARN_IF(NS_FAILED(rv));
 }
 
 // nsIUrlClassifierFeatureCallback
diff --git a/toolkit/components/url-classifier/nsUrlClassifierDBService.cpp b/toolkit/components/url-classifier/nsUrlClassifierDBService.cpp
index b5833857ae0b..04dce364652b 100644
--- a/toolkit/components/url-classifier/nsUrlClassifierDBService.cpp
+++ b/toolkit/components/url-classifier/nsUrlClassifierDBService.cpp
@@ -2566,12 +2566,26 @@ nsUrlClassifierDBService::AsyncClassifyLocalWithFeatureNames(
     nsIUrlClassifierFeature::listType aListType,
     nsIUrlClassifierFeatureCallback* aCallback) {
   MOZ_ASSERT(NS_IsMainThread());
-  MOZ_ASSERT(XRE_IsContentProcess());
 
   if (gShuttingDownThread) {
     return NS_ERROR_ABORT;
   }
 
+  if (!XRE_IsContentProcess()) {
+    nsTArray<RefPtr<nsIUrlClassifierFeature>> features;
+    for (const nsCString& featureName : aFeatureNames) {
+      nsCOMPtr<nsIUrlClassifierFeature> feature =
+          mozilla::net::UrlClassifierFeatureFactory::GetFeatureByName(
+              featureName);
+      if (NS_WARN_IF(!feature)) {
+        continue;
+      }
+      features.AppendElement(feature);
+    }
+    MOZ_ASSERT(!features.IsEmpty(), "At least one URL classifier feature must be present");
+    return AsyncClassifyLocalWithFeatures(aURI, features, aListType, aCallback, true);
+  }
+
   mozilla::dom::ContentChild* content =
       mozilla::dom::ContentChild::GetSingleton();
   if (NS_WARN_IF(!content || content->IsShuttingDown())) {