Add WorkerScriptLoaded message to support attaching DevTools while starting ServiceWorker.

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 <vector>
 
@@ skipping 103 matching lines @@
   EmbeddedWorkerInstance(EmbeddedWorkerRegistry* registry,
                          int embedded_worker_id);
 
   // Called back from EmbeddedWorkerRegistry after Start() passes control to the
   // UI thread to acquire a reference to the process.
   void RecordProcessId(int process_id,
                        ServiceWorkerStatusCode status,
                        int worker_devtools_agent_route_id);
 
   // Called back from Registry when the worker instance has ack'ed that
-  // its WorkerGlobalScope is actually started on |thread_id| in the
+  // it finished loading the script.
+  void OnScriptLoaded();
+
+  // Called back from Registry when the worker instance has ack'ed that
+  // it failed to load the script.
+  void OnScriptLoadFailed();
+
+  // Called back from Registry when the worker instance has ack'ed that
+  // its WorkerGlobalScope is actually started and parsed on |thread_id| in the
   // child process.
   // This will change the internal status from STARTING to RUNNING.
   void OnStarted(int thread_id);
 
   // Called back from Registry when the worker instance has ack'ed that
   // its WorkerGlobalScope is actually stopped in the child process.
   // This will change the internal status from STARTING or RUNNING to
   // STOPPED.
   void OnStopped();
 
@@ skipping 31 matching lines @@
 
   ProcessRefMap process_refs_;
   ListenerList listener_list_;
 
   DISALLOW_COPY_AND_ASSIGN(EmbeddedWorkerInstance);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_EMBEDDED_WORKER_INSTANCE_H_