Decouple Cache Storage messaging from Service Worker/Embedded Worker

content/renderer/service_worker/embedded_worker_context_client.h

Index: content/renderer/service_worker/embedded_worker_context_client.h
diff --git a/content/renderer/service_worker/embedded_worker_context_client.h b/content/renderer/service_worker/embedded_worker_context_client.h
index d12268de92b41fdf455b6343719879315fc337a0..5dcacd9736940b186147ddb37842a80f1fdd7b46 100644
--- a/content/renderer/service_worker/embedded_worker_context_client.h
+++ b/content/renderer/service_worker/embedded_worker_context_client.h
@@ -21,6 +21,7 @@ class TaskRunner;
 namespace blink {
 class WebDataSource;
 class WebServiceWorkerProvider;
+class WebServiceWorkerCacheStorage;
 }
 
 namespace content {
@@ -136,6 +137,11 @@ class EmbeddedWorkerContextClient
   }
   ThreadSafeSender* thread_safe_sender() { return sender_.get(); }
 
+  // Only needed by ServiceWorkerScriptContext when creating a
+  // WebServiceWorkerCacheStorageImpl
+  // TODO(jsbell): Remove when no longer needed. crbug.com/439389
+  const GURL origin() const { return service_worker_scope_.GetOrigin(); }
+
  private:
   void OnMessageToWorker(int thread_id,
                          int embedded_worker_id,