Service Worker: Update stale workers

content/browser/service_worker/service_worker_context_request_handler.cc

 // 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.
 
 #include "content/browser/service_worker/service_worker_context_request_handler.h"
 
 #include "base/time/time.h"
 #include "content/browser/service_worker/service_worker_context_core.h"
 #include "content/browser/service_worker/service_worker_provider_host.h"
 #include "content/browser/service_worker/service_worker_read_from_cache_job.h"
@@ skipping 51 matching lines @@
 
     int64 response_id = context_->storage()->NewResourceId();
     if (response_id == kInvalidServiceWorkerResponseId)
       return NULL;
 
     // Bypass the browser cache for initial installs and update
     // checks after 24 hours have passed.
     int extra_load_flags = 0;
     base::TimeDelta time_since_last_check =
         base::Time::Now() - registration->last_update_check();
-    if (time_since_last_check > base::TimeDelta::FromHours(24) ||
+    if (time_since_last_check > base::TimeDelta::FromHours(
+                                    kServiceWorkerScriptMaxCacheAgeInHours) ||
         version_->force_bypass_cache_for_scripts()) {
       extra_load_flags = net::LOAD_BYPASS_CACHE;
     }
 
     ServiceWorkerVersion* stored_version = registration->waiting_version()
                                                ? registration->waiting_version()
                                                : registration->active_version();
     int64 incumbent_response_id = kInvalidServiceWorkerResourceId;
     if (stored_version && stored_version->script_url() == request->url()) {
       incumbent_response_id =
@@ skipping 38 matching lines @@
     const GURL& url, int64* response_id_out) {
   // We don't read from the script cache until the version is INSTALLED.
   if (version_->status() == ServiceWorkerVersion::NEW ||
       version_->status() == ServiceWorkerVersion::INSTALLING)
     return false;
   *response_id_out = version_->script_cache_map()->LookupResourceId(url);
   return *response_id_out != kInvalidServiceWorkerResponseId;
 }
 
 }  // namespace content