Make registration.update() no longer force bypassing the HTTP cache

content/browser/service_worker/service_worker_context_core.h

 // 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.
 
 #ifndef CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_CONTEXT_CORE_H_
 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_CONTEXT_CORE_H_
 
 #include <map>
 #include <vector>
 
@@ skipping 160 matching lines @@
 
   // A child process of |source_process_id| may be used to run the created
   // worker for initial installation.
   // Non-null |provider_host| must be given if this is called from a document.
   void RegisterServiceWorker(const GURL& pattern,
                              const GURL& script_url,
                              ServiceWorkerProviderHost* provider_host,
                              const RegistrationCallback& callback);
   void UnregisterServiceWorker(const GURL& pattern,
                                const UnregistrationCallback& callback);
+
   // Callback is called issued after all unregistrations occur.  The Status
   // is populated as SERVICE_WORKER_OK if all succeed, or SERVICE_WORKER_FAILED
   // if any did not succeed.
   void UnregisterServiceWorkers(const GURL& origin,
                                 const UnregistrationCallback& callback);
+
+  // Updates the service worker. If |force_bypass_cache| is true or 24 hours
+  // have passed since the last update, bypasses the browser cache.
   void UpdateServiceWorker(ServiceWorkerRegistration* registration,
                            bool force_bypass_cache);
   void UpdateServiceWorker(ServiceWorkerRegistration* registration,
                            bool force_bypass_cache,
                            bool skip_script_comparison,
                            ServiceWorkerProviderHost* provider_host,
                            const UpdateCallback& callback);
 
   // Used in DevTools to update the service worker registration without
   // consulting the browser cache while loading the controlled page. The loading
@@ skipping 103 matching lines @@
   scoped_refptr<base::ObserverListThreadSafe<ServiceWorkerContextObserver>>
       observer_list_;
   base::WeakPtrFactory<ServiceWorkerContextCore> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerContextCore);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_CONTEXT_CORE_H_