diff --git a/third_party/blink/renderer/core/exported/web_shared_worker_impl.cc b/third_party/blink/renderer/core/exported/web_shared_worker_impl.cc
index 339c638..7f337ba9 100644
--- a/third_party/blink/renderer/core/exported/web_shared_worker_impl.cc
+++ b/third_party/blink/renderer/core/exported/web_shared_worker_impl.cc
@@ -152,7 +152,6 @@
       script_request_url_, mojom::RequestContextType::SHARED_WORKER,
       network::mojom::FetchRequestMode::kSameOrigin,
       network::mojom::FetchCredentialsMode::kSameOrigin,
-      creation_address_space_,
       Bind(&WebSharedWorkerImpl::DidReceiveScriptLoaderResponse,
            WTF::Unretained(this)),
       Bind(&WebSharedWorkerImpl::OnScriptLoaderFinished,
diff --git a/third_party/blink/renderer/core/workers/dedicated_worker.cc b/third_party/blink/renderer/core/workers/dedicated_worker.cc
index 60259c5..5990ae3 100644
--- a/third_party/blink/renderer/core/workers/dedicated_worker.cc
+++ b/third_party/blink/renderer/core/workers/dedicated_worker.cc
@@ -246,7 +246,6 @@
         script_request_url_, mojom::RequestContextType::WORKER,
         network::mojom::FetchRequestMode::kSameOrigin,
         network::mojom::FetchCredentialsMode::kSameOrigin,
-        GetExecutionContext()->GetSecurityContext().AddressSpace(),
         WTF::Bind(&DedicatedWorker::OnResponse, WrapPersistent(this)),
         WTF::Bind(&DedicatedWorker::OnFinished, WrapPersistent(this)));
     return;
diff --git a/third_party/blink/renderer/core/workers/dedicated_worker_global_scope.cc b/third_party/blink/renderer/core/workers/dedicated_worker_global_scope.cc
index 0d8dc7a..46a6ce4 100644
--- a/third_party/blink/renderer/core/workers/dedicated_worker_global_scope.cc
+++ b/third_party/blink/renderer/core/workers/dedicated_worker_global_scope.cc
@@ -92,7 +92,6 @@
       *this, CreateOutsideSettingsFetcher(outside_settings_object), script_url,
       destination, network::mojom::FetchRequestMode::kSameOrigin,
       network::mojom::FetchCredentialsMode::kSameOrigin,
-      outside_settings_object.GetAddressSpace(),
       WTF::Bind(&DedicatedWorkerGlobalScope::DidReceiveResponseForClassicScript,
                 WrapWeakPersistent(this),
                 WrapPersistent(classic_script_loader)),
diff --git a/third_party/blink/renderer/core/workers/shared_worker_global_scope.cc b/third_party/blink/renderer/core/workers/shared_worker_global_scope.cc
index eea7b44f..6440d36 100644
--- a/third_party/blink/renderer/core/workers/shared_worker_global_scope.cc
+++ b/third_party/blink/renderer/core/workers/shared_worker_global_scope.cc
@@ -83,7 +83,6 @@
       *this, CreateOutsideSettingsFetcher(outside_settings_object), script_url,
       destination, network::mojom::FetchRequestMode::kSameOrigin,
       network::mojom::FetchCredentialsMode::kSameOrigin,
-      outside_settings_object.GetAddressSpace(),
       WTF::Bind(&SharedWorkerGlobalScope::DidReceiveResponseForClassicScript,
                 WrapWeakPersistent(this),
                 WrapPersistent(classic_script_loader)),
diff --git a/third_party/blink/renderer/core/workers/worker_classic_script_loader.cc b/third_party/blink/renderer/core/workers/worker_classic_script_loader.cc
index e2134f5..d90b74ba 100644
--- a/third_party/blink/renderer/core/workers/worker_classic_script_loader.cc
+++ b/third_party/blink/renderer/core/workers/worker_classic_script_loader.cc
@@ -102,8 +102,7 @@
     ExecutionContext& execution_context,
     ResourceFetcher* fetch_client_settings_object_fetcher,
     const KURL& url,
-    mojom::RequestContextType request_context,
-    mojom::IPAddressSpace creation_address_space) {
+    mojom::RequestContextType request_context) {
   DCHECK(fetch_client_settings_object_fetcher);
   url_ = url;
   fetch_client_settings_object_fetcher_ = fetch_client_settings_object_fetcher;
@@ -111,7 +110,9 @@
   ResourceRequest request(url);
   request.SetHttpMethod(http_names::kGET);
   request.SetExternalRequestStateFromRequestorAddressSpace(
-      creation_address_space);
+      fetch_client_settings_object_fetcher_->GetProperties()
+          .GetFetchClientSettingsObject()
+          .GetAddressSpace());
   request.SetRequestContext(request_context);
 
   SECURITY_DCHECK(execution_context.IsWorkerGlobalScope());
@@ -134,7 +135,6 @@
     mojom::RequestContextType request_context,
     network::mojom::FetchRequestMode fetch_request_mode,
     network::mojom::FetchCredentialsMode fetch_credentials_mode,
-    mojom::IPAddressSpace creation_address_space,
     base::OnceClosure response_callback,
     base::OnceClosure finished_callback) {
   DCHECK(fetch_client_settings_object_fetcher);
@@ -150,7 +150,9 @@
   ResourceRequest request(url);
   request.SetHttpMethod(http_names::kGET);
   request.SetExternalRequestStateFromRequestorAddressSpace(
-      creation_address_space);
+      fetch_client_settings_object_fetcher_->GetProperties()
+          .GetFetchClientSettingsObject()
+          .GetAddressSpace());
   request.SetRequestContext(request_context);
   request.SetFetchRequestMode(fetch_request_mode);
   request.SetFetchCredentialsMode(fetch_credentials_mode);
diff --git a/third_party/blink/renderer/core/workers/worker_classic_script_loader.h b/third_party/blink/renderer/core/workers/worker_classic_script_loader.h
index 352c44e..f4f13bd 100644
--- a/third_party/blink/renderer/core/workers/worker_classic_script_loader.h
+++ b/third_party/blink/renderer/core/workers/worker_classic_script_loader.h
@@ -64,8 +64,7 @@
   void LoadSynchronously(ExecutionContext&,
                          ResourceFetcher* fetch_client_settings_object_fetcher,
                          const KURL&,
-                         mojom::RequestContextType,
-                         mojom::IPAddressSpace);
+                         mojom::RequestContextType);
 
   // Note that callbacks could be invoked before
   // LoadTopLevelScriptAsynchronously() returns.
@@ -79,7 +78,6 @@
       mojom::RequestContextType,
       network::mojom::FetchRequestMode,
       network::mojom::FetchCredentialsMode,
-      mojom::IPAddressSpace,
       base::OnceClosure response_callback,
       base::OnceClosure finished_callback);
 
diff --git a/third_party/blink/renderer/core/workers/worker_global_scope.cc b/third_party/blink/renderer/core/workers/worker_global_scope.cc
index 2281433..2ab81ed 100644
--- a/third_party/blink/renderer/core/workers/worker_global_scope.cc
+++ b/third_party/blink/renderer/core/workers/worker_global_scope.cc
@@ -305,11 +305,7 @@
   EnsureFetcher();
   classic_script_loader->LoadSynchronously(*execution_context, Fetcher(),
                                            script_url,
-                                           mojom::RequestContextType::SCRIPT,
-                                           Fetcher()
-                                               ->GetProperties()
-                                               .GetFetchClientSettingsObject()
-                                               .GetAddressSpace());
+                                           mojom::RequestContextType::SCRIPT);
   if (classic_script_loader->Failed())
     return false;
   *out_response_url = classic_script_loader->ResponseURL();
diff --git a/third_party/blink/renderer/modules/exported/web_embedded_worker_impl.cc b/third_party/blink/renderer/modules/exported/web_embedded_worker_impl.cc
index 230770de..13a259bb5 100644
--- a/third_party/blink/renderer/modules/exported/web_embedded_worker_impl.cc
+++ b/third_party/blink/renderer/modules/exported/web_embedded_worker_impl.cc
@@ -323,8 +323,7 @@
       *shadow_page_->GetDocument(), shadow_page_->GetDocument()->Fetcher(),
       worker_start_data_.script_url, mojom::RequestContextType::SERVICE_WORKER,
       network::mojom::FetchRequestMode::kSameOrigin,
-      network::mojom::FetchCredentialsMode::kSameOrigin,
-      worker_start_data_.address_space, base::OnceClosure(),
+      network::mojom::FetchCredentialsMode::kSameOrigin, base::OnceClosure(),
       Bind(&WebEmbeddedWorkerImpl::OnScriptLoaderFinished,
            WTF::Unretained(this)));
   // Do nothing here since OnScriptLoaderFinished() might have been already
diff --git a/third_party/blink/renderer/modules/service_worker/service_worker_global_scope.cc b/third_party/blink/renderer/modules/service_worker/service_worker_global_scope.cc
index de76cc8..e4e4a02 100644
--- a/third_party/blink/renderer/modules/service_worker/service_worker_global_scope.cc
+++ b/third_party/blink/renderer/modules/service_worker/service_worker_global_scope.cc
@@ -181,7 +181,6 @@
       *this, CreateOutsideSettingsFetcher(outside_settings_object), script_url,
       destination, network::mojom::FetchRequestMode::kSameOrigin,
       network::mojom::FetchCredentialsMode::kSameOrigin,
-      outside_settings_object.GetAddressSpace(),
       WTF::Bind(&ServiceWorkerGlobalScope::DidReceiveResponseForClassicScript,
                 WrapWeakPersistent(this),
                 WrapPersistent(classic_script_loader)),