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

content/browser/service_worker/service_worker_provider_host.h

Index: content/browser/service_worker/service_worker_provider_host.h
diff --git a/content/browser/service_worker/service_worker_provider_host.h b/content/browser/service_worker/service_worker_provider_host.h
index bd0d9e96778b5957ab62237dfec38d399e49dd35..c417fc72439b3f3fc0a0c84962f8aae1eec8a165 100644
--- a/content/browser/service_worker/service_worker_provider_host.h
+++ b/content/browser/service_worker/service_worker_provider_host.h
@@ -107,6 +107,10 @@ class CONTENT_EXPORT ServiceWorkerProviderHost
 
  private:
   friend class ServiceWorkerProviderHostTest;
+  FRIEND_TEST_ALL_PREFIXES(ServiceWorkerContextRequestHandlerTest,
+                           UpdateBefore24Hours);
+  FRIEND_TEST_ALL_PREFIXES(ServiceWorkerContextRequestHandlerTest,
+                           UpdateAfter24Hours);
 
   // ServiceWorkerRegistration::Listener overrides.
   virtual void OnVersionAttributesChanged(