Cache Storage: Remove unused Service/Embedder Worker plumbing

content/renderer/service_worker/embedded_worker_context_client.cc

 // Copyright 2013 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.
 
 #include "content/renderer/service_worker/embedded_worker_context_client.h"
 
 #include <map>
 #include <string>
 
 #include "base/lazy_instance.h"
@@ skipping 122 matching lines @@
 }
 
 void EmbeddedWorkerContextClient::Send(IPC::Message* message) {
   sender_->Send(message);
 }
 
 blink::WebURL EmbeddedWorkerContextClient::scope() const {
   return service_worker_scope_;
 }
 
-blink::WebServiceWorkerCacheStorage*
-    EmbeddedWorkerContextClient::cacheStorage() {
-  return script_context_->cache_storage();
-}
-
 void EmbeddedWorkerContextClient::didPauseAfterDownload() {
   Send(new EmbeddedWorkerHostMsg_DidPauseAfterDownload(embedded_worker_id_));
 }
 
 void EmbeddedWorkerContextClient::getClients(
     const blink::WebServiceWorkerClientQueryOptions& options,
     blink::WebServiceWorkerClientsCallbacks* callbacks) {
   DCHECK(script_context_);
   script_context_->GetClients(options, callbacks);
 }
@@ skipping 311 matching lines @@
   registration->SetWaiting(
       dispatcher->GetServiceWorker(attrs.waiting, false));
   registration->SetActive(
       dispatcher->GetServiceWorker(attrs.active, false));
 
   script_context_->SetRegistrationInServiceWorkerGlobalScope(
       registration.Pass());
 }
 
 }  // namespace content