service worker: Update job gets the script url when the job starts

content/browser/service_worker/service_worker_register_job.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_REGISTER_JOB_H_
 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_REGISTER_JOB_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 128 matching lines @@
   // EmbeddedWorkerInstance::Listener implementation:
   void OnScriptLoaded() override;
 
   void BumpLastUpdateCheckTimeIfNeeded();
 
   // The ServiceWorkerContextCore object should always outlive this.
   base::WeakPtr<ServiceWorkerContextCore> context_;
 
   RegistrationJobType job_type_;
   const GURL pattern_;
-  const GURL script_url_;
+  GURL script_url_;
   std::vector<RegistrationCallback> callbacks_;
   Phase phase_;
   Internal internal_;
   bool doom_installing_worker_;
   bool is_promise_resolved_;
   bool should_uninstall_on_failure_;
   bool force_bypass_cache_;
   bool skip_script_comparison_;
   ServiceWorkerStatusCode promise_resolved_status_;
   std::string promise_resolved_status_message_;
   scoped_refptr<ServiceWorkerRegistration> promise_resolved_registration_;
   base::WeakPtrFactory<ServiceWorkerRegisterJob> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerRegisterJob);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_REGISTER_JOB_H_