After 24 hours, bust the browser cache when checking for ServiceWorker updates

content/browser/service_worker/service_worker_provider_host.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_PROVIDER_HOST_H_
 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_PROVIDER_HOST_H_
 
 #include <set>
 #include <vector>
 
@@ skipping 89 matching lines @@
   // Returns true if the context referred to by this host (i.e. |context_|) is
   // still alive.
   bool IsContextAlive();
 
   // Dispatches message event to the document.
   void PostMessage(const base::string16& message,
                    const std::vector<int>& sent_message_port_ids);
 
  private:
   friend class ServiceWorkerProviderHostTest;
+  FRIEND_TEST_ALL_PREFIXES(ServiceWorkerContextRequestHandlerTest,
+                           SoftUpdateBefore24Hours);
+  FRIEND_TEST_ALL_PREFIXES(ServiceWorkerContextRequestHandlerTest,
+                           HardUpdateAfter24Hours);
 
   // ServiceWorkerRegistration::Listener overrides.
   virtual void OnVersionAttributesChanged(
       ServiceWorkerRegistration* registration,
       ChangedVersionAttributesMask changed_mask,
       const ServiceWorkerRegistrationInfo& info) OVERRIDE;
   virtual void OnRegistrationFailed(
       ServiceWorkerRegistration* registration) OVERRIDE;
 
   // Sets the corresponding version field to the given version or if the given
@@ skipping 31 matching lines @@
   scoped_refptr<ServiceWorkerVersion> running_hosted_version_;
   base::WeakPtr<ServiceWorkerContextCore> context_;
   ServiceWorkerDispatcherHost* dispatcher_host_;
 
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerProviderHost);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_PROVIDER_HOST_H_