[ServiceWorker] Add EmbeddedWorkerInstanceHost Interface.

content/browser/service_worker/service_worker_controllee_request_handler_unittest.cc

Index: content/browser/service_worker/service_worker_controllee_request_handler_unittest.cc
diff --git a/content/browser/service_worker/service_worker_controllee_request_handler_unittest.cc b/content/browser/service_worker/service_worker_controllee_request_handler_unittest.cc
index 560416b23794d9ec4650a538ec520c111431a960..ac5315a93f6a8e15235f8f0309cede9260818e3d 100644
--- a/content/browser/service_worker/service_worker_controllee_request_handler_unittest.cc
+++ b/content/browser/service_worker/service_worker_controllee_request_handler_unittest.cc
@@ -40,23 +40,6 @@ int kMockProviderId = 1;
 
 }
 
-class FailureHelper : public EmbeddedWorkerTestHelper {
- public:
-  FailureHelper() : EmbeddedWorkerTestHelper(base::FilePath()) {}
-  ~FailureHelper() override {}
-
- protected:
-  void OnStartWorker(
-      int embedded_worker_id,
-      int64_t service_worker_version_id,
-      const GURL& scope,
-      const GURL& script_url,
-      bool pause_after_download,
-      mojom::ServiceWorkerEventDispatcherRequest request) override {
-    SimulateWorkerStopped(embedded_worker_id);
-  }
-};
-
 class ServiceWorkerControlleeRequestHandlerTest : public testing::Test {
  public:
   class ServiceWorkerRequestTestResources {