Don't prematurely delete script resources when registration is deleted

content/browser/service_worker/service_worker_registration.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_REGISTRATION_H_
 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_REGISTRATION_H_
 
 #include "base/basictypes.h"
 #include "base/gtest_prod_util.h"
 #include "base/logging.h"
@@ skipping 27 matching lines @@
   ServiceWorkerRegistration(const GURL& pattern,
                             const GURL& script_url,
                             int64 registration_id,
                             base::WeakPtr<ServiceWorkerContextCore> context);
 
   int64 id() const { return registration_id_; }
   const GURL& script_url() const { return script_url_; }
   const GURL& pattern() const { return pattern_; }
 
   ServiceWorkerVersion* active_version() const {
-    DCHECK(!is_shutdown_);
     return active_version_.get();
   }
 
   ServiceWorkerVersion* waiting_version() const {
-    DCHECK(!is_shutdown_);
     return waiting_version_.get();
   }
 
+  bool is_uninstalling() { return is_uninstalling_; }
+
   void set_active_version(ServiceWorkerVersion* version) {
-    DCHECK(!is_shutdown_);
     active_version_ = version;
   }
 
   void set_waiting_version(ServiceWorkerVersion* version) {
-    DCHECK(!is_shutdown_);
     waiting_version_ = version;
   }
 
+  void mark_as_uninstalling() { is_uninstalling_ = true; }
+
   ServiceWorkerRegistrationInfo GetInfo();
 
   // Returns the active version, if it is not null; otherwise, returns the
   // waiting version.
   ServiceWorkerVersion* GetNewestVersion();
 
   // The final synchronous switchover after all events have been
   // fired, and the old "active version" is being shut down.
   void ActivateWaitingVersion();
 
  private:
   ~ServiceWorkerRegistration();
   friend class base::RefCounted<ServiceWorkerRegistration>;
 
   const GURL pattern_;
   const GURL script_url_;
   const int64 registration_id_;
 
   scoped_refptr<ServiceWorkerVersion> active_version_;
   scoped_refptr<ServiceWorkerVersion> waiting_version_;
 
-  bool is_shutdown_;
+  bool is_uninstalling_;
   base::WeakPtr<ServiceWorkerContextCore> context_;
 
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerRegistration);
 };
 }  // namespace content
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_REGISTRATION_H_