Service Worker: Improve error messages from register().

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 <vector>
 
 #include "base/memory/weak_ptr.h"
@@ skipping 20 matching lines @@
 //  - firing the 'install' event at the ServiceWorkerVersion
 //  - firing the 'activate' event at the ServiceWorkerVersion
 //  - waiting for older ServiceWorkerVersions to deactivate
 //  - designating the new version to be the 'active' version
 //  - updating storage
 class ServiceWorkerRegisterJob : public ServiceWorkerRegisterJobBase,
                                  public EmbeddedWorkerInstance::Listener,
                                  public ServiceWorkerRegistration::Listener {
  public:
   typedef base::Callback<void(ServiceWorkerStatusCode status,
+                              const std::string& status_message,
                               ServiceWorkerRegistration* registration)>
       RegistrationCallback;
 
   // For registration jobs.
   CONTENT_EXPORT ServiceWorkerRegisterJob(
       base::WeakPtr<ServiceWorkerContextCore> context,
       const GURL& pattern,
       const GURL& script_url);
 
   // For update jobs.
@@ skipping 73 matching lines @@
       const scoped_refptr<ServiceWorkerRegistration>& existing_registration,
       ServiceWorkerStatusCode status);
   void UpdateAndContinue();
   void OnStartWorkerFinished(ServiceWorkerStatusCode status);
   void OnStoreRegistrationComplete(ServiceWorkerStatusCode status);
   void InstallAndContinue();
   void OnInstallFinished(ServiceWorkerStatusCode status);
   void ActivateAndContinue();
   void OnActivateFinished(ServiceWorkerStatusCode status);
   void Complete(ServiceWorkerStatusCode status);
-  void CompleteInternal(ServiceWorkerStatusCode status);
+  void Complete(ServiceWorkerStatusCode status,
+                const std::string& status_message);
+  void CompleteInternal(ServiceWorkerStatusCode status,
+                        const std::string& status_message);
   void ResolvePromise(ServiceWorkerStatusCode status,
+                      const std::string& status_message,
                       ServiceWorkerRegistration* registration);
 
   // EmbeddedWorkerInstance::Listener override of OnPausedAfterDownload.
   void OnPausedAfterDownload() override;
   bool OnMessageReceived(const IPC::Message& message) override;
 
   // ServiceWorkerRegistration::Listener overrides
   void OnRegistrationFinishedUninstalling(
       ServiceWorkerRegistration* registration) override;
 
   void OnCompareScriptResourcesComplete(
       ServiceWorkerStatusCode status,
       bool are_equal);
 
   void AssociateProviderHostsToRegistration(
       ServiceWorkerRegistration* registration);
 
   // The ServiceWorkerContextCore object should always outlive this.
   base::WeakPtr<ServiceWorkerContextCore> context_;
 
   RegistrationJobType job_type_;
   const GURL pattern_;
   const GURL script_url_;
   std::vector<RegistrationCallback> callbacks_;
   Phase phase_;
   Internal internal_;
   bool doom_installing_worker_;
   bool is_promise_resolved_;
   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_