Implement the infrastructure of creating WorkerFetchContext in worker global scope.

content/browser/service_worker/service_worker_context_core.h

Index: content/browser/service_worker/service_worker_context_core.h
diff --git a/content/browser/service_worker/service_worker_context_core.h b/content/browser/service_worker/service_worker_context_core.h
index bb1fc8993cc8fca8c8472648306c06ccd72031bb..65050374a9d6f5547c399f2bb51c280343a32b22 100644
--- a/content/browser/service_worker/service_worker_context_core.h
+++ b/content/browser/service_worker/service_worker_context_core.h
@@ -24,6 +24,7 @@
 #include "content/browser/service_worker/service_worker_registration_status.h"
 #include "content/browser/service_worker/service_worker_storage.h"
 #include "content/common/content_export.h"
+#include "content/common/worker_url_loader_factory_provider.mojom.h"
 #include "content/public/browser/service_worker_context.h"
 
 class GURL;
@@ -295,6 +296,14 @@ class CONTENT_EXPORT ServiceWorkerContextCore
   // version. The count resets to zero when the worker successfully starts.
   int GetVersionFailureCount(int64_t version_id);
 
+  // Binds the ServiceWorkerWorkerClient of a dedicated (or shared) worker to
+  // the parent frame's ServiceWorkerProviderHost. (This is used only when
+  // off-main-thread-fetch is enabled.)
+  void BindWorkerFetchContext(
+      int render_process_id,
+      int service_worker_provider_id,
+      mojom::ServiceWorkerWorkerClientAssociatedPtrInfo client_ptr_info);
+
   base::WeakPtr<ServiceWorkerContextCore> AsWeakPtr() {
     return weak_factory_.GetWeakPtr();
   }