Revert of ServiceWorker: Implement StartWorker by using mojo

content/common/service_worker/embedded_worker.mojom

Index: content/common/service_worker/embedded_worker.mojom
diff --git a/content/common/service_worker/embedded_worker.mojom b/content/common/service_worker/embedded_worker.mojom
deleted file mode 100644
index d15d62bb2371ebae30cf4f56ea2122759ffa5308..0000000000000000000000000000000000000000
--- a/content/common/service_worker/embedded_worker.mojom
+++ /dev/null
@@ -1,16 +0,0 @@
-// Copyright 2016 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-module content.mojom;
-
-import "services/shell/public/interfaces/interface_provider.mojom";
-import "url/mojo/url.mojom";
-
-[Native]
-struct EmbeddedWorkerStartParams;
-
-// Interface to control a renderer-side worker's environment.
-interface EmbeddedWorkerInstanceClient {
-  StartWorker(EmbeddedWorkerStartParams params);
-};