[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 641ef9475f86308bf26fc96f51c2a74942227dd8..2508cbf82ad31d26dd1b110f27f760c9f007004c 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 {