Fix crash during EmbeddedWorkerInstance startup sequence failures

content/browser/service_worker/embedded_worker_instance.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_EMBEDDED_WORKER_INSTANCE_H_
 #define CONTENT_BROWSER_SERVICE_WORKER_EMBEDDED_WORKER_INSTANCE_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 213 matching lines @@
                          int column_number,
                          const GURL& source_url);
 
   // Called back from Registry when the worker instance reports to the console.
   void OnReportConsoleMessage(int source_identifier,
                               int message_level,
                               const base::string16& message,
                               int line_number,
                               const GURL& source_url);
 
+  // Resets all running state. After this function is called, |status_| is
+  // STOPPED.
   void ReleaseProcess();
+  // Called when the startup sequence failed. Calls ReleaseProcess() and invokes
+  // |callback| with |status|. May destroy |this|.

[kinuko, 2015/09/13 08:41:11]

nit: ... via |callback|. ?

+  void OnStartFailed(const StatusCallback& callback,
+                     ServiceWorkerStatusCode status);
 
   base::WeakPtr<ServiceWorkerContextCore> context_;
   scoped_refptr<EmbeddedWorkerRegistry> registry_;
   const int embedded_worker_id_;
   Status status_;
   StartingPhase starting_phase_;
 
   // Current running information. -1 indicates the worker is not running.
   int process_id_;
   int thread_id_;
@@ skipping 13 matching lines @@
   base::TimeTicks start_timing_;
 
   base::WeakPtrFactory<EmbeddedWorkerInstance> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(EmbeddedWorkerInstance);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_EMBEDDED_WORKER_INSTANCE_H_