Store the service worker script and its imports on first load... kinda

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_
 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_DISK_CACHE_
 
 #include "content/common/content_export.h"
 #include "webkit/browser/appcache/appcache_disk_cache.h"
 
@@ skipping 24 matching lines @@
  protected:
   // Should only be constructed by the storage class.
   friend class ServiceWorkerStorage;
   ServiceWorkerResponseWriter(
       int64 response_id,
       ServiceWorkerDiskCache* disk_cache);
 };
 
 struct HttpResponseInfoIOBuffer
     : public appcache::HttpResponseInfoIOBuffer {
+ public:
+  HttpResponseInfoIOBuffer() : appcache::HttpResponseInfoIOBuffer() {}
+  explicit HttpResponseInfoIOBuffer(net::HttpResponseInfo* info)
+    : appcache::HttpResponseInfoIOBuffer(info) {}
  protected:
   virtual ~HttpResponseInfoIOBuffer();
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_DISK_CACHE_