Implement EmbeddedWorkerContextClient.setCachedMetadata/clearCachedMetadata

content/browser/service_worker/service_worker_disk_cache.h

 // Copyright 2014 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.
 
 #ifndef CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_DISK_CACHE_H_
 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_DISK_CACHE_H_
 
 #include "content/browser/appcache/appcache_disk_cache.h"
 #include "content/common/content_export.h"
 
@@ skipping 22 matching lines @@
 class CONTENT_EXPORT ServiceWorkerResponseWriter
     : public AppCacheResponseWriter {
  protected:
   // Should only be constructed by the storage class.
   friend class ServiceWorkerStorage;
   ServiceWorkerResponseWriter(
       int64 response_id,
       ServiceWorkerDiskCache* disk_cache);
 };
 
+class CONTENT_EXPORT ServiceWorkerResponseMetadataWriter
+    : public AppCacheResponseMetadataWriter {
+ protected:
+  // Should only be constructed by the storage class.
+  friend class ServiceWorkerStorage;
+  ServiceWorkerResponseMetadataWriter(int64 response_id,
+                                      ServiceWorkerDiskCache* disk_cache);
+};
+
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_DISK_CACHE_H_